client/mysqlmanagerc.c

added support for quiet
    increased line buffer size
client/mysqltest.c
    fixed memory leak
    added query logging to result file
    added error message logging to result file
    added enable_query_log/disable_query_log
mysql-test/mysql-test-run.sh
    converted tests to use mysqlmanager

Updated test results
This commit is contained in:
sasha@mysql.sashanet.com 2001-09-27 23:05:54 -06:00
parent 043deed839
commit bb66c80aeb
160 changed files with 6687 additions and 81 deletions

View File

@ -414,3 +414,4 @@ vio/test-sslclient
vio/test-sslserver
vio/viotest-ssl
client/mysqlmanager-pwgen
*.reject

View File

@ -169,9 +169,11 @@ int main(int argc, char** argv)
manager->last_errno);
for (;!feof(fp);)
{
char buf[1024];
char buf[4096];
if (!fgets(buf,sizeof(buf),fp))
break;
if (!quiet)
fprintf(fp_out,"<<%s",buf);
if (mysql_manager_command(manager,buf,strlen(buf)))
die("Error in command: %s(%d)",manager->last_error,manager->last_errno);
while (!manager->eof)
@ -179,7 +181,8 @@ int main(int argc, char** argv)
if (mysql_manager_fetch_line(manager,buf,sizeof(buf)))
die("Error fetching result line: %s(%d)", manager->last_error,
manager->last_errno);
fprintf(fp_out,"%s\n",buf);
if (!quiet)
fprintf(fp_out,">>%s\n",buf);
}
}
mysql_manager_close(manager);

View File

@ -139,11 +139,13 @@ typedef struct
int int_val;
int alloced_len;
int int_dirty; /* do not update string if int is updated until first read */
int alloced;
} VAR;
VAR var_reg[10];
/*Perl/shell-like variable registers */
HASH var_hash;
int disable_query_log=0;
struct connection cons[MAX_CONS];
struct connection* cur_con, *next_con, *cons_end;
@ -165,6 +167,7 @@ Q_DIRTY_CLOSE, Q_REPLACE,
Q_PING, Q_EVAL,
Q_RPL_PROBE, Q_ENABLE_RPL_PARSE,
Q_DISABLE_RPL_PARSE, Q_EVAL_RESULT,
Q_ENABLE_QUERY_LOG, Q_DISABLE_QUERY_LOG,
Q_UNKNOWN, /* Unknown command. */
Q_COMMENT, /* Comments, ignored. */
Q_COMMENT_WITH_COMMAND
@ -196,6 +199,7 @@ const char *command_names[] = {
"ping", "eval",
"rpl_probe", "enable_rpl_parse",
"disable_rpl_parse", "eval_result",
"enable_query_log", "disable_query_log",
0
};
@ -619,6 +623,18 @@ int var_query_set(VAR* v, const char* p, const char** p_end)
return 0;
}
void var_copy(VAR* dest, VAR* src)
{
dest->int_val=src->int_val;
dest->int_dirty=src->int_dirty;
if (dest->alloced_len < src->alloced_len &&
!(dest->str_val=my_realloc(dest->str_val,src->alloced_len,
MYF(MY_WME))))
die("Out of memory");
dest->str_val_len=src->str_val_len;
memcpy(dest->str_val,src->str_val,src->str_val_len);
}
int eval_expr(VAR* v, const char* p, const char** p_end)
{
VAR* vp;
@ -626,7 +642,7 @@ int eval_expr(VAR* v, const char* p, const char** p_end)
{
if ((vp = var_get(p,p_end,0)))
{
memcpy(v, vp, sizeof(*v));
var_copy(v, vp);
return 0;
}
}
@ -699,6 +715,7 @@ int do_system(struct st_query* q)
if (system(expr_buf) && q->abort_on_error)
die("system command '%s' failed", expr_buf);
}
var_free(&v);
return 0;
}
@ -714,6 +731,7 @@ int do_echo(struct st_query* q)
write(1, v.str_val, v.str_val_len);
}
write(1, "\n", 1);
var_free(&v);
return 0;
}
@ -1190,10 +1208,10 @@ int do_done(struct st_query* q)
parser.current_line = *--cur_block;
}
else
{
++parser.current_line;
--cur_block;
}
{
++parser.current_line;
--cur_block;
}
return 0;
}
@ -1202,7 +1220,6 @@ int do_while(struct st_query* q)
char* p=q->first_argument;
const char* expr_start, *expr_end;
VAR v;
var_init(&v,0,0,0,0);
if (cur_block == block_stack_end)
die("Nesting too deeply");
if (!*block_ok)
@ -1219,6 +1236,7 @@ int do_while(struct st_query* q)
expr_end = strrchr(expr_start, ')');
if (!expr_end)
die("missing ')' in while");
var_init(&v,0,0,0,0);
eval_expr(&v, ++expr_start, &expr_end);
*cur_block++ = parser.current_line++;
if (!v.int_val)
@ -1228,6 +1246,7 @@ int do_while(struct st_query* q)
}
else
*++block_ok = 1;
var_free(&v);
return 0;
}
@ -1727,6 +1746,11 @@ int run_query(MYSQL* mysql, struct st_query* q, int flags)
if ((flags & QUERY_SEND) && mysql_send_query(mysql, query, query_len))
die("At line %u: unable to send query '%s'", start_lineno, query);
if ((flags & QUERY_SEND) && !disable_query_log)
{
dynstr_append_mem(ds,query,query_len);
dynstr_append_mem(ds,";\n",2);
}
if(!(flags & QUERY_REAP))
return 0;
@ -1743,7 +1767,11 @@ int run_query(MYSQL* mysql, struct st_query* q, int flags)
for (i=0 ; q->expected_errno[i] ; i++)
{
if ((q->expected_errno[i] == mysql_errno(mysql)))
{
dynstr_append(ds,mysql_error(mysql));
dynstr_append_mem(ds,"\n",1);
goto end; /* Ok */
}
}
if (i)
{
@ -1887,6 +1915,7 @@ static VAR* var_init(VAR* v, const char* name, int name_len, const char* val,
die("Out of memory");
tmp_var->name = (name) ? (char*)tmp_var + sizeof(*tmp_var) : 0;
tmp_var->alloced = (v == 0);
if(!(tmp_var->str_val = my_malloc(val_alloc_len, MYF(MY_WME))))
die("Out of memory");
@ -1905,7 +1934,8 @@ static VAR* var_init(VAR* v, const char* name, int name_len, const char* val,
static void var_free(void* v)
{
my_free(((VAR*) v)->str_val, MYF(MY_WME));
my_free((char*) v, MYF(MY_WME));
if (((VAR*)v)->alloced)
my_free((char*) v, MYF(MY_WME));
}
@ -2008,6 +2038,8 @@ int main(int argc, char** argv)
case Q_RPL_PROBE: do_rpl_probe(q); break;
case Q_ENABLE_RPL_PARSE: do_enable_rpl_parse(q); break;
case Q_DISABLE_RPL_PARSE: do_disable_rpl_parse(q); break;
case Q_ENABLE_QUERY_LOG: disable_query_log=0; break;
case Q_DISABLE_QUERY_LOG: disable_query_log=1; break;
case Q_SOURCE: do_source(q); break;
case Q_SLEEP: do_sleep(q); break;
case Q_INC: do_inc(q); break;

View File

@ -98,7 +98,8 @@ MYSQL_TEST_DIR=$BASEDIR/mysql-test
export MYSQL_TEST_DIR
STD_DATA=$MYSQL_TEST_DIR/std_data
hostname=`hostname` # Installed in the mysql privilege table
MANAGER_QUIET_OPT="-q"
TESTDIR="$MYSQL_TEST_DIR/t"
TESTSUFFIX=test
TOT_SKIP=0
@ -119,6 +120,9 @@ MASTER_MYPORT=9306
SLAVE_RUNNING=0
SLAVE_MYPORT=9307
MYSQL_MANAGER_PORT=23546
MYSQL_MANAGER_PW_FILE=$MYSQL_TEST_DIR/var/tmp/manager.pwd
MYSQL_MANAGER_LOG=$MYSQL_TEST_DIR/var/log/manager.log
MYSQL_MANAGER_USER=root
NO_SLAVE=0
EXTRA_MASTER_OPT=""
@ -131,11 +135,14 @@ DO_CLIENT_GDB=""
SLEEP_TIME=2
CHARACTER_SET=latin1
DBUSER=""
START_WAIT_TIMEOUT=3
STOP_WAIT_TIMEOUT=3
while test $# -gt 0; do
case "$1" in
--user=*) DBUSER=`$ECHO "$1" | $SED -e "s;--user=;;"` ;;
--force) FORCE=1 ;;
--verbose-manager) MANAGER_QUIET_OPT="" ;;
--local) USE_RUNNING_SERVER="" ;;
--tmpdir=*) MYSQL_TMP_DIR=`$ECHO "$1" | $SED -e "s;--tmpdir=;;"` ;;
--master_port=*) MASTER_MYPORT=`$ECHO "$1" | $SED -e "s;--master_port=;;"` ;;
@ -158,6 +165,9 @@ while test $# -gt 0; do
--skip-rpl) NO_SLAVE=1 ;;
--skip-test=*) SKIP_TEST=`$ECHO "$1" | $SED -e "s;--skip-test=;;"`;;
--do-test=*) DO_TEST=`$ECHO "$1" | $SED -e "s;--do-test=;;"`;;
--wait-timeout=*)
START_WAIT_TIMEOUT=`$ECHO "$1" | $SED -e "s;--wait-timeout=;;"`
STOP_WAIT_TIMEOUT=$START_WAIT_TIMEOUT;;
--record)
RECORD=1;
EXTRA_MYSQL_TEST_OPT="$EXTRA_MYSQL_TEST_OPT $1" ;;
@ -187,6 +197,8 @@ while test $# -gt 0; do
DO_GPROF=1
;;
--gdb )
START_WAIT_TIMEOUT=300
STOP_WAIT_TIMEOUT=300
if [ x$BINARY_DIST = x1 ] ; then
$ECHO "Note: you will get more meaningful output on a source distribution compiled with debugging option when running tests with --gdb option"
fi
@ -337,6 +349,7 @@ GPROF_MASTER=$GPROF_DIR/master.gprof
GPROF_SLAVE=$GPROF_DIR/slave.gprof
TIMEFILE="$MYSQL_TMP_DIR/mysqltest-time"
SLAVE_MYSQLD=$MYSQLD #this can be changed later if we are doing gcov
XTERM=`which xterm`
#++
# Function Definitions
@ -503,21 +516,48 @@ abort_if_failed()
start_manager()
{
MYSQL_MANAGER_PW=`$MYSQL_MANAGER_PWGEN -o $MYSQL_MANAGER_PW_FILE`
MYSQL_MANAGER_PW=`$MYSQL_MANAGER_PWGEN -u $MYSQL_MANAGER_USER \
-o $MYSQL_MANAGER_PW_FILE`
$MYSQL_MANAGER --log=$MYSQL_MANAGER_LOG --port=$MYSQL_MANAGER_PORT \
--password-file=$MYSQL_MANAGER_PW_FILE
abort_if_failed "Could not start MySQL manager"
}
manager_cmd()
stop_manager()
{
$MYSQL_MANAGER_CLIENT --user=$MYSQL_MANAGER_USER \
$MYSQL_MANAGER_CLIENT $MANAGER_QUIET_OPT -u$MYSQL_MANAGER_USER \
-p$MYSQL_MANAGER_PW -P $MYSQL_MANAGER_PORT <<EOF
shutdown
EOF
}
manager_launch()
{
ident=$1
shift
$MYSQL_MANAGER_CLIENT $MANAGER_QUIET_OPT --user=$MYSQL_MANAGER_USER \
--password=$MYSQL_MANAGER_PW --port=$MYSQL_MANAGER_PORT <<EOF
$@
def_exec $ident $@
set_exec_stdout $ident $CUR_MYERR
set_exec_stderr $ident $CUR_MYERR
set_exec_con $ident root localhost $CUR_MYSOCK
start_exec $ident $START_WAIT_TIMEOUT
EOF
abort_if_failed "Could not execute manager command"
}
manager_term()
{
ident=$1
shift
$MYSQL_MANAGER_CLIENT $MANAGER_QUIET_OPT --user=$MYSQL_MANAGER_USER \
--password=$MYSQL_MANAGER_PW --port=$MYSQL_MANAGER_PORT <<EOF
stop_exec $ident $TERM_WAIT_TIMEOUT
EOF
abort_if_failed "Could not execute manager command"
}
start_master()
{
[ x$MASTER_RUNNING = 1 ] && return
@ -564,21 +604,24 @@ start_master()
--innodb_data_file_path=ibdata1:50M \
$SMALL_SERVER \
$EXTRA_MASTER_OPT $EXTRA_MASTER_MYSQLD_OPT"
fi
fi
CUR_MYERR=$MASTER_MYERR
CUR_MYSOCK=$MASTER_MYSOCK
if [ x$DO_DDD = x1 ]
then
$ECHO "set args $master_args" > $GDB_MASTER_INIT
ddd --debugger "gdb -x $GDB_MASTER_INIT" $MYSQLD &
prompt_user "Hit enter to continue after you've started the master"
manager_launch master ddd -display $DISPLAY --debugger \
"gdb -x $GDB_MASTER_INIT" $MYSQLD
elif [ x$DO_GDB = x1 ]
then
$ECHO "set args $master_args" > $GDB_MASTER_INIT
xterm -title "Master" -e gdb -x $GDB_MASTER_INIT $MYSQLD &
prompt_user "Hit enter to continue after you've started the master"
manager_launch master $XTERM -display :0 -title "Master" -e gdb -x \
$GDB_MASTER_INIT $MYSQLD
else
$MYSQLD $master_args >> $MASTER_MYERR 2>&1 &
manager_launch master $MYSQLD $master_args
fi
wait_for_server_start $MASTER_MYPORT
MASTER_RUNNING=1
}
@ -607,7 +650,7 @@ start_slave()
$RM -f $SLAVE_MYDDIR/log.*
slave_args="--no-defaults $master_info \
--exit-info=256 \
--log-bin=$MYSQL_TEST_DIR/var/log/slave-bin
--log-bin=$MYSQL_TEST_DIR/var/log/slave-bin \
--log-slave-updates \
--basedir=$MY_BASEDIR \
--datadir=$SLAVE_MYDDIR \
@ -626,20 +669,22 @@ start_slave()
--report-port=$SLAVE_MYPORT \
$SMALL_SERVER \
$EXTRA_SLAVE_OPT $EXTRA_SLAVE_MYSQLD_OPT"
CUR_MYERR=$SLAVE_MYERR
CUR_MYSOCK=$SLAVE_MYSOCK
if [ x$DO_DDD = x1 ]
then
$ECHO "set args $master_args" > $GDB_SLAVE_INIT
ddd --debugger "gdb -x $GDB_SLAVE_INIT" $SLAVE_MYSQLD &
prompt_user "Hit enter to continue after you've started the slave"
manager_launch slave ddd -display $DISPLAY --debugger \
"gdb -x $GDB_SLAVE_INIT" $SLAVE_MYSQLD
elif [ x$DO_GDB = x1 ]
then
$ECHO "set args $slave_args" > $GDB_SLAVE_INIT
xterm -title "Slave" -e gdb -x $GDB_SLAVE_INIT $SLAVE_MYSQLD &
prompt_user "Hit enter to continue after you've started the slave"
manager_launch slave $XTERM -display $DISPLAY -title "Slave" -e gdb -x \
$GDB_SLAVE_INIT $SLAVE_MYSQLD
else
$SLAVE_MYSQLD $slave_args >> $SLAVE_MYERR 2>&1 &
manager_launch slave $SLAVE_MYSQLD $slave_args
fi
wait_for_server_start $SLAVE_MYPORT
SLAVE_RUNNING=1
}
@ -655,7 +700,7 @@ stop_slave ()
{
if [ x$SLAVE_RUNNING = x1 ]
then
$MYSQLADMIN --no-defaults --socket=$SLAVE_MYSOCK -u root -O shutdown_timeout=10 shutdown
manager_term slave
if [ $? != 0 ] && [ -f $SLAVE_MYPID ]
then # try harder!
$ECHO "slave not cooperating with mysqladmin, will try manual kill"
@ -677,7 +722,7 @@ stop_master ()
{
if [ x$MASTER_RUNNING = x1 ]
then
$MYSQLADMIN --no-defaults --socket=$MASTER_MYSOCK -u root -O shutdown_timeout=10 shutdown
manager_term master
if [ $? != 0 ] && [ -f $MASTER_MYPID ]
then # try harder!
$ECHO "master not cooperating with mysqladmin, will try manual kill"
@ -862,6 +907,7 @@ run_testcase ()
if [ -z "$DO_GDB" ] && [ -z "$USE_RUNNING_SERVER" ] && [ -z "$DO_DDD" ]
then
mysql_stop
stop_manager
fi
exit 1
fi
@ -894,7 +940,8 @@ then
$MYSQLADMIN --no-defaults --socket=$SLAVE_MYSOCK -u root -O connect_timeout=5 shutdown > /dev/null 2>&1
$ECHO "Installing Test Databases"
mysql_install_db
$ECHO "Starting MySQL Manager"
start_manager
#do not automagically start deamons if we are in gdb or running only one test
#case
if [ -z "$DO_GDB" ] && [ -z "$DO_DDD" ]
@ -926,10 +973,10 @@ then
fi
cd $savedir
mysql_stop
stop_manager
exit
fi
$ECHO
$ECHO " TEST USER SYSTEM ELAPSED RESULT"
$ECHO $DASH72
@ -963,6 +1010,7 @@ then
mysql_stop
fi
stop_manager
report_stats
$ECHO

View File

@ -1,2 +1,61 @@
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
cont_nr int(11) NOT NULL auto_increment,
ver_nr int(11) NOT NULL default '0',
aufnr int(11) NOT NULL default '0',
username varchar(50) NOT NULL default '',
hdl_nr int(11) NOT NULL default '0',
eintrag date NOT NULL default '0000-00-00',
st_klasse varchar(40) NOT NULL default '',
st_wert varchar(40) NOT NULL default '',
st_zusatz varchar(40) NOT NULL default '',
st_bemerkung varchar(255) NOT NULL default '',
kunden_art varchar(40) NOT NULL default '',
mcbs_knr int(11) default NULL,
mcbs_aufnr int(11) NOT NULL default '0',
schufa_status char(1) default '?',
bemerkung text,
wirknetz text,
wf_igz int(11) NOT NULL default '0',
tarifcode varchar(80) default NULL,
recycle char(1) default NULL,
sim varchar(30) default NULL,
mcbs_tpl varchar(30) default NULL,
emp_nr int(11) NOT NULL default '0',
laufzeit int(11) default NULL,
hdl_name varchar(30) default NULL,
prov_hdl_nr int(11) NOT NULL default '0',
auto_wirknetz varchar(50) default NULL,
auto_billing varchar(50) default NULL,
touch timestamp(14) NOT NULL,
kategorie varchar(50) default NULL,
kundentyp varchar(20) NOT NULL default '',
sammel_rech_msisdn varchar(30) NOT NULL default '',
p_nr varchar(9) NOT NULL default '',
suffix char(3) NOT NULL default '',
PRIMARY KEY (cont_nr),
KEY idx_aufnr(aufnr),
KEY idx_hdl_nr(hdl_nr),
KEY idx_st_klasse(st_klasse),
KEY ver_nr(ver_nr),
KEY eintrag_idx(eintrag),
KEY emp_nr_idx(emp_nr),
KEY wf_igz(wf_igz),
KEY touch(touch),
KEY hdl_tag(eintrag,hdl_nr),
KEY prov_hdl_nr(prov_hdl_nr),
KEY mcbs_aufnr(mcbs_aufnr),
KEY kundentyp(kundentyp),
KEY p_nr(p_nr,suffix)
) TYPE=MyISAM;
INSERT INTO t1 VALUES (3359356,405,3359356,'Mustermann Musterfrau',52500,'2000-05-20','workflow','Auftrag erledigt','Originalvertrag eingegangen und geprüft','','privat',1485525,2122316,'+','','N',1909160,'MobilComSuper92000D2',NULL,NULL,'MS9ND2',3,24,'MobilCom Shop Koeln',52500,NULL,'auto',20010202105916,'Mobilfunk','PP','','','');
INSERT INTO t1 VALUES (3359357,468,3359357,'Mustermann Musterfrau',7001,'2000-05-20','workflow','Auftrag erledigt','Originalvertrag eingegangen und geprüft','','privat',1503580,2139699,'+','','P',1909171,'MobilComSuper9D1T10SFreisprech(Akquise)',NULL,NULL,'MS9NS1',327,24,'MobilCom Intern',7003,NULL,'auto',20010202105916,'Mobilfunk','PP','','','');
INSERT INTO t1 VALUES (3359358,407,3359358,'Mustermann Musterfrau',7001,'2000-05-20','workflow','Auftrag erledigt','Originalvertrag eingegangen und geprüft','','privat',1501358,2137473,'N','','N',1909159,'MobilComSuper92000D2',NULL,NULL,'MS9ND2',325,24,'MobilCom Intern',7003,NULL,'auto',20010202105916,'Mobilfunk','PP','','','');
INSERT INTO t1 VALUES (3359359,468,3359359,'Mustermann Musterfrau',7001,'2000-05-20','workflow','Auftrag erledigt','Originalvertrag eingegangen und geprüft','','privat',1507831,2143894,'+','','P',1909162,'MobilComSuper9D1T10SFreisprech(Akquise)',NULL,NULL,'MS9NS1',327,24,'MobilCom Intern',7003,NULL,'auto',20010202105916,'Mobilfunk','PP','','','');
INSERT INTO t1 VALUES (3359360,0,0,'Mustermann Musterfrau',29674907,'2000-05-20','workflow','Auftrag erledigt','Originalvertrag eingegangen und geprüft','','privat',1900169997,2414578,'+',NULL,'N',1909148,'',NULL,NULL,'RV99066_2',20,NULL,'POS',29674907,NULL,NULL,20010202105916,'Mobilfunk','','','97317481','007');
INSERT INTO t1 VALUES (3359361,406,3359361,'Mustermann Musterfrau',7001,'2000-05-20','workflow','Auftrag storniert','','(7001-84):Storno, Kd. möchte nicht mehr','privat',NULL,0,'+','','P',1909150,'MobilComSuper92000D1(Akquise)',NULL,NULL,'MS9ND1',325,24,'MobilCom Intern',7003,NULL,'auto',20010202105916,'Mobilfunk','PP','','','');
INSERT INTO t1 VALUES (3359362,406,3359362,'Mustermann Musterfrau',7001,'2000-05-20','workflow','Auftrag erledigt','Originalvertrag eingegangen und geprüft','','privat',1509984,2145874,'+','','P',1909154,'MobilComSuper92000D1(Akquise)',NULL,NULL,'MS9ND1',327,24,'MobilCom Intern',7003,NULL,'auto',20010202105916,'Mobilfunk','PP','','','');
SELECT ELT(FIELD(kundentyp,'PP','PPA','PG','PGA','FK','FKA','FP','FPA','K','KA','V','VA',''), 'Privat (Private Nutzung)','Privat (Private Nutzung) Sitz im Ausland','Privat (geschaeftliche Nutzung)','Privat (geschaeftliche Nutzung) Sitz im Ausland','Firma (Kapitalgesellschaft)','Firma (Kapitalgesellschaft) Sitz im Ausland','Firma (Personengesellschaft)','Firma (Personengesellschaft) Sitz im Ausland','oeff. rechtl. Koerperschaft','oeff. rechtl. Koerperschaft Sitz im Ausland','Eingetragener Verein','Eingetragener Verein Sitz im Ausland','Typ unbekannt') AS Kundentyp ,kategorie FROM t1 WHERE hdl_nr < 2000000 AND kategorie IN ('Prepaid','Mobilfunk') AND st_klasse = 'Workflow' GROUP BY kundentyp ORDER BY kategorie;
Kundentyp kategorie
Privat (Private Nutzung) Mobilfunk
drop table t1;

View File

@ -1,3 +1,20 @@
drop table if exists t1;
create table t1 (
col1 int not null auto_increment primary key,
col2 varchar(30) not null,
col3 varchar (20) not null,
col4 varchar(4) not null,
col5 enum('PENDING', 'ACTIVE', 'DISABLED') not null,
col6 int not null, to_be_deleted int);
alter table t1
add column col4_5 varchar(20) not null after col4,
add column col7 varchar(30) not null after col6,
add column col8 datetime not null, drop column to_be_deleted;
drop table t1;
create table t1 (bandID MEDIUMINT UNSIGNED NOT NULL PRIMARY KEY, payoutID SMALLINT UNSIGNED NOT NULL);
insert into t1 (bandID,payoutID) VALUES (1,6),(2,6),(3,4),(4,9),(5,10),(6,1),(7,12),(8,12);
alter table t1 add column new_col int, order by payoutid,bandid;
select * from t1;
bandID payoutID new_col
6 1 NULL
3 4 NULL
@ -7,6 +24,8 @@ bandID payoutID new_col
5 10 NULL
7 12 NULL
8 12 NULL
alter table t1 order by bandid,payoutid;
select * from t1;
bandID payoutID new_col
1 6 NULL
2 6 NULL
@ -16,19 +35,76 @@ bandID payoutID new_col
6 1 NULL
7 12 NULL
8 12 NULL
drop table t1;
CREATE TABLE t1 (
GROUP_ID int(10) unsigned DEFAULT '0' NOT NULL,
LANG_ID smallint(5) unsigned DEFAULT '0' NOT NULL,
NAME varchar(80) DEFAULT '' NOT NULL,
PRIMARY KEY (GROUP_ID,LANG_ID),
KEY NAME (NAME));
ALTER TABLE t1 CHANGE NAME NAME CHAR(80) not null;
SHOW FULL COLUMNS FROM t1;
Field Type Null Key Default Extra Privileges
GROUP_ID int(10) unsigned PRI 0 select,insert,update,references
LANG_ID smallint(5) unsigned PRI 0 select,insert,update,references
NAME char(80) MUL select,insert,update,references
DROP TABLE t1;
create table t1 (n int);
insert into t1 values(9),(3),(12),(10);
alter table t1 order by n;
select * from t1;
n
3
9
10
12
drop table t1;
CREATE TABLE t1 (
id int(11) unsigned NOT NULL default '0',
category_id tinyint(4) unsigned NOT NULL default '0',
type_id tinyint(4) unsigned NOT NULL default '0',
body text NOT NULL,
user_id int(11) unsigned NOT NULL default '0',
status enum('new','old') NOT NULL default 'new',
PRIMARY KEY (id)
) TYPE=MyISAM;
ALTER TABLE t1 ORDER BY t1.id, t1.status, t1.type_id, t1.user_id, t1.body;
DROP TABLE t1;
CREATE TABLE t1 (AnamneseId int(10) unsigned NOT NULL auto_increment,B BLOB,PRIMARY KEY (AnamneseId)) type=myisam;
insert into t1 values (null,"hello");
LOCK TABLES t1 WRITE;
ALTER TABLE t1 ADD Column new_col int not null;
UNLOCK TABLES;
OPTIMIZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 optimize status OK
DROP TABLE t1;
create table t1 (n1 int not null, n2 int, n3 int, n4 float,
unique(n1),
key (n1, n2, n3, n4),
key (n2, n3, n4, n1),
key (n3, n4, n1, n2),
key (n4, n1, n2, n3) );
alter table t1 disable keys;
insert into t1 values(10,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(9,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(8,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(7,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(6,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(5,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(4,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(3,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(2,RAND()*1000,RAND()*1000,RAND());
insert into t1 values(1,RAND()*1000,RAND()*1000,RAND());
alter table t1 enable keys;
drop table t1;
create table t1 (i int unsigned not null auto_increment primary key);
insert into t1 values (null),(null),(null),(null);
alter table t1 drop i,add i int unsigned not null auto_increment, drop primary key, add primary key (i);
select * from t1;
i
1
2
3
4
drop table t1;

View File

@ -1,6 +1,13 @@
drop table if exists t1,t2;
create table t1 (i int, j int);
insert into t1 values (1,2), (3,4), (5,6), (7,8);
select * from t1 procedure analyse();
Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
t1.i 1 7 1 1 0 0 4.0000 2.2361 ENUM('1','3','5','7') NOT NULL
t1.j 2 8 1 1 0 0 5.0000 2.2361 ENUM('2','4','6','8') NOT NULL
create table t2 select * from t1 procedure analyse();
select * from t2;
Field_name Min_value Max_value Min_length Max_length Empties_or_zeros Nulls Avg_value_or_avg_length Std Optimal_fieldtype
t1.i 1 7 1 1 0 0 4.0000 2.2361 ENUM('1','3','5','7') NOT NULL
t1.j 2 8 1 1 0 0 5.0000 2.2361 ENUM('2','4','6','8') NOT NULL
drop table t1,t2;

View File

@ -1,32 +1,75 @@
create table t1 (a int not null auto_increment,b int, primary key (a)) type=myisam auto_increment=3;
insert into t1 values (1,1),(NULL,3),(NULL,4);
delete from t1 where a=4;
insert into t1 values (NULL,5),(NULL,6);
select * from t1;
a b
1 1
3 3
5 5
6 6
delete from t1 where a=6;
replace t1 values (3,1);
ALTER TABLE t1 add c int;
replace t1 values (3,3,3);
insert into t1 values (NULL,7,7);
update t1 set a=8,b=b+1,c=c+1 where a=7;
insert into t1 values (NULL,9,9);
select * from t1;
a b c
1 1 NULL
3 3 3
5 5 NULL
8 8 8
9 9 9
drop table t1;
create table t1 (a int not null auto_increment,b int, primary key (a)) type=isam;
insert into t1 values (1,1),(NULL,2),(3,3),(NULL,4);
delete from t1 where a=4 or a=2;
insert into t1 values (NULL,4),(NULL,5),(6,6);
select * from t1;
a b
1 1
5 5
3 3
4 4
6 6
delete from t1 where a=6;
replace t1 values (3,1);
replace t1 values (3,3);
ALTER TABLE t1 add c int;
insert into t1 values (NULL,6,6);
select * from t1;
a b c
1 1 NULL
5 5 NULL
3 3 NULL
4 4 NULL
6 6 6
drop table t1;
create table t1 (
skey tinyint unsigned NOT NULL auto_increment PRIMARY KEY,
sval char(20)
);
insert into t1 values (NULL, "hello");
insert into t1 values (NULL, "hey");
select * from t1;
skey sval
1 hello
2 hey
select _rowid,t1._rowid,skey,sval from t1;
_rowid _rowid skey sval
1 1 1 hello
2 2 2 hey
drop table t1;
create table t1 (a char(10) not null, b int not null auto_increment, primary key(a,b));
insert into t1 values ("a",1),("b",2),("a",2),("c",1);
insert into t1 values ("a",NULL),("b",NULL),("c",NULL),("e",NULL);
insert into t1 (a) values ("a"),("b"),("c"),("d");
insert into t1 (a) values ('k'),('d');
insert into t1 (a) values ("a");
insert into t1 values ("d",last_insert_id());
select * from t1;
a b
a 1
a 2
@ -44,9 +87,17 @@ d 2
d 5
e 1
k 1
drop table t1;
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ordid), index(ord,ordid));
insert into t1 (ordid,ord) values (NULL,'sdj'),(NULL,'sdj');
select * from t1;
ordid ord
1 sdj
2 sdj
drop table t1;
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid));
insert into t1 values (NULL,'sdj'),(NULL,'sdj'),(NULL,"abc"),(NULL,'abc'),(NULL,'zzz'),(NULL,'sdj'),(NULL,'abc');
select * from t1;
ordid ord
1 abc
2 abc
@ -55,8 +106,15 @@ ordid ord
2 sdj
3 sdj
1 zzz
drop table t1;
create table t1 (a int not null primary key auto_increment);
insert into t1 values (0);
update t1 set a=0;
select * from t1;
a
0
check table t1;
Table Op Msg_type Msg_text
test.t1 check warning Found row where the auto_increment column has the value 0
test.t1 check status OK
drop table t1;

View File

@ -1,43 +1,72 @@
set SQL_LOG_BIN=0;
drop table if exists t1;
create table t1(n int);
backup table t1 to '../bogus';
Table Op Msg_type Msg_text
test.t1 backup error Failed copying .frm file: errno = X
test.t1 backup status Operation failed
backup table t1 to '../tmp';
Table Op Msg_type Msg_text
test.t1 backup status OK
drop table t1;
restore table t1 from '../tmp';
Table Op Msg_type Msg_text
test.t1 restore status OK
select count(*) from t1;
count(*)
0
insert into t1 values (23),(45),(67);
backup table t1 to '../tmp';
Table Op Msg_type Msg_text
test.t1 backup status OK
drop table t1;
restore table t1 from '../bogus';
Table Op Msg_type Msg_text
t1 restore error Failed copying .frm file
restore table t1 from '../tmp';
Table Op Msg_type Msg_text
test.t1 restore status OK
select n from t1;
n
23
45
67
create table t2(m int not null primary key);
create table t3(k int not null primary key);
insert into t2 values (123),(145),(167);
insert into t3 values (223),(245),(267);
backup table t1,t2,t3 to '../tmp';
Table Op Msg_type Msg_text
test.t1 backup status OK
test.t2 backup status OK
test.t3 backup status OK
drop table t1,t2,t3;
restore table t1,t2,t3 from '../tmp';
Table Op Msg_type Msg_text
test.t1 restore status OK
test.t2 restore status OK
test.t3 restore status OK
select n from t1;
n
23
45
67
select m from t2;
m
123
145
167
select k from t3;
k
223
245
267
drop table t1,t2,t3;
restore table t1 from '../tmp';
Table Op Msg_type Msg_text
test.t1 restore status OK
lock tables t1 write;
backup table t1 to '../tmp';
unlock tables;
Table Op Msg_type Msg_text
test.t1 backup status OK

View File

@ -1,3 +1,32 @@
drop table if exists tblChange;
CREATE TABLE tblCharge (
ChargeID int(10) unsigned DEFAULT '0' NOT NULL auto_increment,
ServiceID int(10) unsigned DEFAULT '0' NOT NULL,
ChargeDate date DEFAULT '0000-00-00' NOT NULL,
ChargeAmount decimal(20,2) DEFAULT '0.00' NOT NULL,
FedTaxes decimal(20,2) DEFAULT '0.00' NOT NULL,
ProvTaxes decimal(20,2) DEFAULT '0.00' NOT NULL,
ChargeStatus enum('New','Auth','Unauth','Sale','Denied','Refund')
DEFAULT 'New' NOT NULL,
ChargeAuthorizationMessage text,
ChargeComment text,
ChargeTimeStamp varchar(20),
PRIMARY KEY (ChargeID),
KEY ServiceID (ServiceID),
KEY ChargeDate (ChargeDate)
) type=BDB;
BEGIN;
INSERT INTO tblCharge
VALUES(NULL,1,'2001-03-01',1,1,1,'New',NULL,NULL,'now');
COMMIT;
BEGIN;
UPDATE tblCharge SET ChargeAuthorizationMessage = 'blablabla' WHERE
ChargeID = 1;
COMMIT;
INSERT INTO tblCharge
VALUES(NULL,1,'2001-03-01',1,1,1,'New',NULL,NULL,'now');
select * from tblCharge;
ChargeID ServiceID ChargeDate ChargeAmount FedTaxes ProvTaxes ChargeStatus ChargeAuthorizationMessage ChargeComment ChargeTimeStamp
1 1 2001-03-01 1.00 1.00 1.00 New blablabla NULL now
2 1 2001-03-01 1.00 1.00 1.00 New NULL NULL now
drop table tblCharge;

View File

@ -1,2 +1,6 @@
drop table if exists t1;
create table t1(n int not null, key(n)) delay_key_write = 1;
select count(distinct n) from t1;
count(distinct n)
100
drop table t1;

View File

@ -1,15 +1,27 @@
select 0,256,00000000000000065536,2147483647,-2147483648,2147483648,+4294967296;
0 256 00000000000000065536 2147483647 -2147483648 2147483648 +4294967296
0 256 65536 2147483647 -2147483648 2147483648 4294967296
select 9223372036854775807,-009223372036854775808;
9223372036854775807 -009223372036854775808
9223372036854775807 -9223372036854775808
select +9999999999999999999,-9999999999999999999;
+9999999999999999999 -9999999999999999999
10000000000000000000 -10000000000000000000
drop table if exists t1;
create table t1 (a bigint unsigned not null, primary key(a));
insert into t1 values (18446744073709551615), (0xFFFFFFFFFFFFFFFE);
select * from t1;
a
18446744073709551614
18446744073709551615
select * from t1 where a=18446744073709551615;
a
18446744073709551615
select * from t1 where a='18446744073709551615';
a
18446744073709551615
delete from t1 where a=18446744073709551615;
select * from t1;
a
18446744073709551614
drop table t1;

View File

@ -1,33 +1,55 @@
create table t1 (name char(20) not null, primary key (name));
create table t2 (name char(20) binary not null, primary key (name));
insert into t1 values ("å");
insert into t1 values ("ä");
insert into t1 values ("ö");
insert into t2 select * from t1;
select * from t1 order by name;
name
ĺ
ä
ö
select concat("*",name,"*") from t1 order by 1;
concat("*",name,"*")
*ĺ*
*ä*
*ö*
select min(name),min(concat("*",name,"*")),max(name),max(concat("*",name,"*")) from t1;
min(name) min(concat("*",name,"*")) max(name) max(concat("*",name,"*"))
ĺ *ĺ* ö *ö*
select * from t2 order by name;
name
ä
ĺ
ö
select concat("*",name,"*") from t2 order by 1;
concat("*",name,"*")
*ä*
*ĺ*
*ö*
select min(name),min(concat("*",name,"*")),max(name),max(concat("*",name,"*")) from t2;
min(name) min(concat("*",name,"*")) max(name) max(concat("*",name,"*"))
ä *ä* ö *ö*
select name from t1 where name between 'Ä' and 'Ö';
name
ä
ö
select name from t2 where name between 'ä' and 'ö';
name
ä
ĺ
ö
select name from t2 where name between 'Ä' and 'Ö';
name
drop table t1,t2;
create table t1 (a char(10) not null, b char(10) binary not null,index (a));
insert into t1 values ("hello ","hello "),("hello2 ","hello2 ");
select * from t1 where a="hello ";
a b
hello hello
select * from t1 where b="hello ";
a b
select * from t1 where b="hello";
a b
hello hello
drop table t1;

View File

@ -1,5 +1,11 @@
drop table if exists t1;
CREATE TABLE t1 (a int, unique (a), b int not null, unique(b), c int not null, index(c));
replace into t1 values (1,1,1),(2,2,2),(3,1,3);
select * from t1;
a b c
3 1 3
2 2 2
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;

View File

@ -1,42 +1,65 @@
drop table if exists t1;
select CASE "b" when "a" then 1 when "b" then 2 END;
CASE "b" when "a" then 1 when "b" then 2 END
2
select CASE "c" when "a" then 1 when "b" then 2 END;
CASE "c" when "a" then 1 when "b" then 2 END
NULL
select CASE "c" when "a" then 1 when "b" then 2 ELSE 3 END;
CASE "c" when "a" then 1 when "b" then 2 ELSE 3 END
3
select CASE BINARY "b" when "a" then 1 when "B" then 2 WHEN "b" then "ok" END;
CASE BINARY "b" when "a" then 1 when "B" then 2 WHEN "b" then "ok" END
ok
select CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END;
CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END
ok
select CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end;
CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end
a
select CASE when 1=0 then "true" else "false" END;
CASE when 1=0 then "true" else "false" END
false
select CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END;
CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END
one
select CASE 2.0 when 1 then "one" WHEN 2.0 then "two" ELSE "more" END;
CASE 2.0 when 1 then "one" WHEN 2.0 then "two" ELSE "more" END
two
select (CASE "two" when "one" then "1" WHEN "two" then "2" END) | 0;
(CASE "two" when "one" then "1" WHEN "two" then "2" END) | 0
2
select (CASE "two" when "one" then 1.00 WHEN "two" then 2.00 END) +0.0;
(CASE "two" when "one" then 1.00 WHEN "two" then 2.00 END) +0.0
2.00
select case 1/0 when "a" then "true" else "false" END;
case 1/0 when "a" then "true" else "false" END
false
select case 1/0 when "a" then "true" END;
case 1/0 when "a" then "true" END
NULL
select (case 1/0 when "a" then "true" END) | 0;
(case 1/0 when "a" then "true" END) | 0
NULL
select (case 1/0 when "a" then "true" END) + 0.0;
(case 1/0 when "a" then "true" END) + 0.0
NULL
select case when 1>0 then "TRUE" else "FALSE" END;
case when 1>0 then "TRUE" else "FALSE" END
TRUE
select case when 1<0 then "TRUE" else "FALSE" END;
case when 1<0 then "TRUE" else "FALSE" END
FALSE
create table t1 (a int);
insert into t1 values(1),(2),(3),(4);
select case a when 1 then 2 when 2 then 3 else 0 end as fcase, count(*) from t1 group by fcase;
fcase count(*)
0 2
2 1
3 1
select case a when 1 then "one" when 2 then "two" else "nothing" end as fcase, count(*) from t1 group by fcase;
fcase count(*)
nothing 2
one 1
two 1
drop table t1;

View File

@ -1,2 +1,7 @@
drop table if exists t1;
create table t1(n int not null, key(n), key(n), key(n), key(n));
check table t1 type=extended;
insert into t1 values (200000);
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;

View File

@ -1,15 +1,27 @@
select 1+2/*hello*/+3;
1+2/*hello*/+3
6
select 1 /* long
multi line comment */;
1
1
/* empty query */;
Query was empty
select 1 /*!32301 +1 */;
1 /*!32301 +1
2
select 1 /*!52301 +1 */;
1
1
select 1--1;
1--1
2
select 1 --2
+1;
1 --2
+1
4
select 1 # The rest of the row will be ignored
;
1
1

View File

@ -1,6 +1,14 @@
drop table if exists t1;
CREATE TABLE t1 (id CHAR(12) not null, PRIMARY KEY (id));
insert into t1 values ('000000000001'),('000000000002');
explain select * from t1 where id=000000000001;
table type possible_keys key key_len ref rows Extra
t1 index PRIMARY PRIMARY 12 NULL 2 where used; Using index
select * from t1 where id=000000000001;
id
000000000001
delete from t1 where id=000000000002;
select * from t1;
id
000000000001
drop table t1;

View File

@ -1,11 +1,46 @@
drop table if exists t1,t2,t3;
create table t1 (libname varchar(21) not null, city text, primary key (libname));
create table t2 (isbn varchar(21) not null, author text, title text, primary key (isbn));
create table t3 (isbn varchar(21) not null, libname varchar(21) not null, quantity int ,primary key (isbn,libname));
insert into t2 values ('001','Daffy','A duck''s life');
insert into t2 values ('002','Bugs','A rabbit\'s life');
insert into t2 values ('003','Cowboy','Life on the range');
insert into t2 values ('000','Anonymous','Wanna buy this book?');
insert into t2 values ('004','Best Seller','One Heckuva book');
insert into t2 values ('005','EveryoneBuys','This very book');
insert into t2 values ('006','San Fran','It is a san fran lifestyle');
insert into t2 values ('007','BerkAuthor','Cool.Berkley.the.book');
insert into t3 values('000','New York Public Libra','1');
insert into t3 values('001','New York Public Libra','2');
insert into t3 values('002','New York Public Libra','3');
insert into t3 values('003','New York Public Libra','4');
insert into t3 values('004','New York Public Libra','5');
insert into t3 values('005','New York Public Libra','6');
insert into t3 values('006','San Fransisco Public','5');
insert into t3 values('007','Berkeley Public1','3');
insert into t3 values('007','Berkeley Public2','3');
insert into t3 values('001','NYC Lib','8');
insert into t1 values ('New York Public Libra','New York');
insert into t1 values ('San Fransisco Public','San Fran');
insert into t1 values ('Berkeley Public1','Berkeley');
insert into t1 values ('Berkeley Public2','Berkeley');
insert into t1 values ('NYC Lib','New York');
select t2.isbn,city,t1.libname,count(t1.libname) as a from t3 left join t1 on t3.libname=t1.libname left join t2 on t3.isbn=t2.isbn group by city,t1.libname;
isbn city libname a
007 Berkeley Berkeley Public1 1
007 Berkeley Berkeley Public2 1
000 New York New York Public Libra 6
001 New York NYC Lib 1
006 San Fran San Fransisco Public 1
select t2.isbn,city,t1.libname,count(distinct t1.libname) as a from t3 left join t1 on t3.libname=t1.libname left join t2 on t3.isbn=t2.isbn group by city having count(distinct t1.libname) > 1;
isbn city libname a
007 Berkeley Berkeley Public1 2
000 New York New York Public Libra 2
drop table t1, t2, t3;
create table t1 (f1 int);
insert into t1 values (1);
create table t2 (f1 int,f2 int);
select t1.f1,count(distinct t2.f2),count(distinct 1,NULL) from t1 left join t2 on t1.f1=t2.f1 group by t1.f1;
f1 count(distinct t2.f2) count(distinct 1,NULL)
1 0 0
drop table t1,t2;

View File

@ -1,37 +1,61 @@
create table t1(n1 int, n2 int, s char(20), vs varchar(20), t text);
insert into t1 values (1,11, 'one','eleven', 'eleven'),
(1,11, 'one','eleven', 'eleven'),
(2,11, 'two','eleven', 'eleven'),
(2,12, 'two','twevle', 'twelve'),
(2,13, 'two','thirteen', 'foo'),
(2,13, 'two','thirteen', 'foo'),
(2,13, 'two','thirteen', 'bar'),
(NULL,13, 'two','thirteen', 'bar'),
(2,NULL, 'two','thirteen', 'bar'),
(2,13, NULL,'thirteen', 'bar'),
(2,13, 'two',NULL, 'bar'),
(2,13, 'two','thirteen', NULL);
select distinct n1 from t1;
n1
1
2
NULL
select count(distinct n1) from t1;
count(distinct n1)
2
select distinct n2 from t1;
n2
11
12
13
NULL
select count(distinct n2) from t1;
count(distinct n2)
3
select distinct s from t1;
s
one
two
NULL
select count(distinct s) from t1;
count(distinct s)
2
select distinct vs from t1;
vs
eleven
twevle
thirteen
NULL
select count(distinct vs) from t1;
count(distinct vs)
3
select distinct t from t1;
t
eleven
twelve
foo
bar
NULL
select count(distinct t) from t1;
count(distinct t)
4
select distinct n1,n2 from t1;
n1 n2
1 11
2 11
@ -39,15 +63,19 @@ n1 n2
2 13
NULL 13
2 NULL
select count(distinct n1,n2) from t1;
count(distinct n1,n2)
4
select distinct n1,s from t1;
n1 s
1 one
2 two
NULL two
2 NULL
select count(distinct n1,s) from t1;
count(distinct n1,s)
2
select distinct s,n1,vs from t1;
s n1 vs
one 1 eleven
two 2 eleven
@ -56,8 +84,10 @@ two 2 thirteen
two NULL thirteen
NULL 2 thirteen
two 2 NULL
select count(distinct s,n1,vs) from t1;
count(distinct s,n1,vs)
4
select distinct s,t from t1;
s t
one eleven
two eleven
@ -66,19 +96,33 @@ two foo
two bar
NULL bar
two NULL
select count(distinct s,t) from t1;
count(distinct s,t)
5
select count(distinct n1), count(distinct n2) from t1;
count(distinct n1) count(distinct n2)
2 3
select count(distinct n2), n1 from t1 group by n1;
count(distinct n2) n1
1 NULL
1 1
3 2
drop table t1;
create table t1 (n int default NULL);
flush status;
select count(distinct n) from t1;
count(distinct n)
5000
show status like 'Created_tmp_disk_tables';
Variable_name Value
Created_tmp_disk_tables 1
drop table t1;
create table t1 (s text);
flush status;
select count(distinct s) from t1;
count(distinct s)
5000
show status like 'Created_tmp_disk_tables';
Variable_name Value
Created_tmp_disk_tables 1
drop table t1;

View File

@ -1,14 +1,78 @@
drop table if exists t1,t2;
create table t1 (b char(0));
insert into t1 values (""),(null);
select * from t1;
b
NULL
drop table if exists t1;
create table t1 (b char(0) not null);
create table if not exists t1 (b char(0) not null);
insert into t1 values (""),(null);
select * from t1;
b
drop table if exists t1;
create table t2 type=heap select * from t1;
Table 'test.t1' doesn't exist
create table t2 select auto+1 from t1;
Table 'test.t1' doesn't exist
drop table if exists t1,t2;
create table t1 (b char(0) not null, index(b));
The used table handler can't index column 'b'
create table t1 (a int not null auto_increment,primary key (a)) type=heap;
The used table type doesn't support AUTO_INCREMENT columns
create table t1 (a int not null,b text) type=heap;
The used table type doesn't support BLOB/TEXT columns
create table t1 (a int ,primary key(a)) type=heap;
All parts of a PRIMARY KEY must be NOT NULL; If you need NULL in a key, use UNIQUE instead
create table t1 (a int,b text, index(a)) type=isam;
Column 'a' is used with UNIQUE or INDEX but is not defined as NOT NULL
create table t1 (a int,b text, index(b)) type=isam;
BLOB column 'b' can't be used in key specification with the used table type
drop table if exists t1;
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid)) type=isam;
Incorrect table definition; There can only be one auto column and it must be defined as a key
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid)) type=heap;
The used table type doesn't support AUTO_INCREMENT columns
create table t1 (ordid int(8), primary key (ordid));
All parts of a PRIMARY KEY must be NOT NULL; If you need NULL in a key, use UNIQUE instead
create table t1 (ordid int(8), unique (ordid)) type=isam;
Column 'ordid' is used with UNIQUE or INDEX but is not defined as NOT NULL
create table not_existing_database.test (a int);
Can't create/write to file './not_existing_database/test.frm' (Errcode: 2)
create table `a/a` (a int);
Incorrect table name 'a/a'
create table `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa int);
Incorrect table name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
create table a (`aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` int);
Identifier name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' is too long
create table 1ea10 (1a20 int,1e int);
insert into 1ea10 values(1,1);
select 1ea10.1a20,1e+ 1e+10 from 1ea10;
1a20 1e+ 1e+10
1 10000000001
drop table 1ea10;
create table t1 (t1.index int);
drop table t1;
drop database if exists test_$1;
create database test_$1;
create table test_$1.$test1 (a$1 int, $b int, c$ int);
insert into test_$1.$test1 values (1,2,3);
select a$1, $b, c$ from test_$1.$test1;
a$1 $b c$
1 2 3
create table test_$1.test2$ (a int);
drop table test_$1.test2$;
drop database test_$1;
create table t1 (a int auto_increment not null primary key, B CHAR(20));
insert into t1 (b) values ("hello"),("my"),("world");
create table t2 (key (b)) select * from t1;
explain select * from t2 where b="world";
table type possible_keys key key_len ref rows Extra
t2 ref B B 21 const 1 where used
select * from t2 where b="world";
a B
3 world
drop table t1,t2;

View File

@ -1,3 +1,12 @@
drop table if exists t1;
create table t1 (a char (20) not null, b int not null auto_increment, index (a,b),index(b));
insert into t1 (a) values ('ä'),('ac'),('ae'),('ad'),('Äc'),('aeb');
insert into t1 (a) values ('üc'),('uc'),('ue'),('ud'),('Ü'),('ueb'),('uf');
insert into t1 (a) values ('ö'),('oc'),('Öa'),('oe'),('od'),('Öc'),('oeb');
insert into t1 (a) values ('s'),('ss'),('ß'),('ßb'),('ssa'),('ssc'),('ßa');
insert into t1 (a) values ('eä'),('uü'),('öo'),('ää'),('ääa'),('aeae');
insert into t1 (a) values ('q'),('a'),('u'),('o'),('é'),('É');
select a,b from t1 order by a,b;
a b
a 35
ac 2
@ -38,6 +47,7 @@ ueb 12
üc 7
uf 13
uü 29
select a,b from t1 order by upper(a),b;
a b
a 35
ac 2
@ -78,6 +88,7 @@ ueb 12
üc 7
uf 13
uü 29
select a from t1 order by a desc;
a
uf
@ -118,15 +129,19 @@ ae
ad
ac
a
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
select * from t1 where a like "ö%";
a b
ö 14
Öa 16
Öc 19
öo 30
select * from t1 where a like binary "%É%";
a b
É 39
select * from t1 where a like "%Á%";
a b
a 35
ac 2
@ -138,6 +153,7 @@ aeb 6
Öa 16
ssa 25
ßa 27
select * from t1 where a like "%U%";
a b
u 36
uc 8
@ -146,30 +162,46 @@ ue 9
ueb 12
uf 13
uü 29
select * from t1 where a like "%ss%";
a b
ss 22
ssa 25
ssc 26
drop table t1;
select strcmp('ä','ae'),strcmp('ae','ä'),strcmp('aeq','äq'),strcmp('äq','aeq');
strcmp('ä','ae') strcmp('ae','ä') strcmp('aeq','äq') strcmp('äq','aeq')
0 0 0 0
select strcmp('ss','ß'),strcmp('ß','ss'),strcmp('ßs','sss'),strcmp('ßq','ssq');
strcmp('ss','ß') strcmp('ß','ss') strcmp('ßs','sss') strcmp('ßq','ssq')
0 0 0 0
select strcmp('ä','af'),strcmp('a','ä'),strcmp('ää','aeq'),strcmp('ää','aeaeq');
strcmp('ä','af') strcmp('a','ä') strcmp('ää','aeq') strcmp('ää','aeaeq')
-1 -1 -1 -1
select strcmp('ss','ßa'),strcmp('ß','ssa'),strcmp('sßa','sssb'),strcmp('s','ß');
strcmp('ss','ßa') strcmp('ß','ssa') strcmp('sßa','sssb') strcmp('s','ß')
-1 -1 -1 -1
select strcmp('ö','oö'),strcmp('Ü','uü'),strcmp('ö','oeb');
strcmp('ö','oö') strcmp('Ü','uü') strcmp('ö','oeb')
-1 -1 -1
select strcmp('af','ä'),strcmp('ä','a'),strcmp('aeq','ää'),strcmp('aeaeq','ää');
strcmp('af','ä') strcmp('ä','a') strcmp('aeq','ää') strcmp('aeaeq','ää')
1 1 1 1
select strcmp('ßa','ss'),strcmp('ssa','ß'),strcmp('sssb','sßa'),strcmp('ß','s');
strcmp('ßa','ss') strcmp('ssa','ß') strcmp('sssb','sßa') strcmp('ß','s')
1 1 1 1
select strcmp('u','öa'),strcmp('u','ö');
strcmp('u','öa') strcmp('u','ö')
1 1
create table t1 (a varchar(10), key(a));
insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
select * from t1 where a like "abc%";
a
abc
abcd
select * from t1 where a like "test%";
a
test
select * from t1 where a like "te_t";
a
test
drop table t1;

View File

@ -1,10 +1,30 @@
create table t1 (a char(10), tmsp timestamp);
insert into t1 set a = 1;
insert delayed into t1 set a = 2;
insert into t1 set a = 3, tmsp=NULL;
insert delayed into t1 set a = 4;
insert delayed into t1 set a = 5, tmsp = 19711006010203;
insert delayed into t1 (a, tmsp) values (6, 19711006010203);
insert delayed into t1 (a, tmsp) values (7, NULL);
insert into t1 set a = 8,tmsp=19711006010203;
select * from t1 where tmsp=0;
a tmsp
select * from t1 where tmsp=19711006010203;
a tmsp
5 19711006010203
6 19711006010203
8 19711006010203
drop table t1;
create table t1 (a int not null auto_increment primary key, b char(10));
insert delayed into t1 values (1,"b");
insert delayed into t1 values (null,"c");
insert delayed into t1 values (3,"d"),(null,"e");
insert delayed into t1 values (3,"this will give an","error");
Column count doesn't match value count at row 1
select * from t1;
a b
1 b
2 c
3 d
4 e
drop table t1;

View File

@ -0,0 +1,26 @@
drop table if exists t1;
CREATE TABLE t1 (a tinyint(3), b tinyint(5));
INSERT INTO t1 VALUES (1,1);
INSERT LOW_PRIORITY INTO t1 VALUES (1,2);
INSERT INTO t1 VALUES (1,3);
DELETE from t1 where a=1 limit 1;
DELETE LOW_PRIORITY from t1 where a=1;
INSERT INTO t1 VALUES (1,1);
DELETE from t1;
LOCK TABLE t1 write;
INSERT INTO t1 VALUES (1,2);
DELETE from t1;
UNLOCK TABLES;
INSERT INTO t1 VALUES (1,2);
SET AUTOCOMMIT=0;
DELETE from t1;
SET AUTOCOMMIT=1;
drop table t1;
create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23);
delete from t1 where a=26;
drop table t1;
create table t1 (a bigint not null, primary key (a,a,a,a,a,a,a,a,a,a));
insert into t1 values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
delete from t1 where a=27;
drop table t1;

View File

@ -1,4 +1,9 @@
drop table if exists t1;
create table t1 (n int);
insert into t1 values (1),(2),(3);
select * from t1;
n
1
2
3
drop table t1;

View File

@ -1,3 +1,21 @@
drop table if exists t1,t2,t3;
CREATE TABLE t1 (id int,facility char(20));
CREATE TABLE t2 (facility char(20));
INSERT INTO t1 VALUES (NULL,NULL);
INSERT INTO t1 VALUES (-1,'');
INSERT INTO t1 VALUES (0,'');
INSERT INTO t1 VALUES (1,'/L');
INSERT INTO t1 VALUES (2,'A01');
INSERT INTO t1 VALUES (3,'ANC');
INSERT INTO t1 VALUES (4,'F01');
INSERT INTO t1 VALUES (5,'FBX');
INSERT INTO t1 VALUES (6,'MT');
INSERT INTO t1 VALUES (7,'P');
INSERT INTO t1 VALUES (8,'RV');
INSERT INTO t1 VALUES (9,'SRV');
INSERT INTO t1 VALUES (10,'VMT');
INSERT INTO t2 SELECT DISTINCT FACILITY FROM t1;
select id from t1 group by id;
id
NULL
-1
@ -12,6 +30,7 @@ NULL
8
9
10
select * from t1 order by id;
id facility
NULL NULL
-1
@ -26,6 +45,7 @@ NULL NULL
8 RV
9 SRV
10 VMT
select id-5,facility from t1 order by "id-5";
id-5 facility
NULL NULL
-6
@ -40,6 +60,7 @@ NULL NULL
3 RV
4 SRV
5 VMT
select id,concat(facility) from t1 group by id ;
id concat(facility)
NULL NULL
-1
@ -54,6 +75,7 @@ NULL NULL
8 RV
9 SRV
10 VMT
select id+0 as a,max(id),concat(facility) as b from t1 group by a order by b desc,a;
a max(id) b
10 10 VMT
9 9 SRV
@ -68,9 +90,11 @@ a max(id) b
-1 -1
0 0
NULL NULL NULL
select id >= 0 and id <= 5 as grp,count(*) from t1 group by grp;
grp count(*)
0 7
1 6
SELECT DISTINCT FACILITY FROM t1;
FACILITY
NULL
@ -84,6 +108,7 @@ P
RV
SRV
VMT
SELECT FACILITY FROM t2;
FACILITY
NULL
@ -97,52 +122,157 @@ P
RV
SRV
VMT
SELECT count(*) from t1,t2 where t1.facility=t2.facility;
count(*)
12
select count(facility) from t1;
count(facility)
12
select count(*) from t1;
count(*)
13
select count(*) from t1 where facility IS NULL;
count(*)
1
select count(*) from t1 where facility = NULL;
count(*)
0
select count(*) from t1 where facility IS NOT NULL;
count(*)
12
select count(*) from t1 where id IS NULL;
count(*)
1
select count(*) from t1 where id IS NOT NULL;
count(*)
12
drop table t1,t2;
CREATE TABLE t1 (UserId int(11) DEFAULT '0' NOT NULL);
INSERT INTO t1 VALUES (20);
INSERT INTO t1 VALUES (27);
SELECT UserId FROM t1 WHERE Userid=22;
UserId
SELECT UserId FROM t1 WHERE UserId=22 group by Userid;
UserId
SELECT DISTINCT UserId FROM t1 WHERE UserId=22 group by Userid;
UserId
SELECT DISTINCT UserId FROM t1 WHERE UserId=22;
UserId
drop table t1;
CREATE TABLE t1 (a int(10) unsigned not null primary key,b int(10) unsigned);
INSERT INTO t1 VALUES (1,1),(2,1);
CREATE TABLE t2 (a int(10) unsigned not null, key (A));
INSERT INTO t2 VALUES (1),(2);
CREATE TABLE t3 (a int(10) unsigned, key(A), b text);
INSERT INTO t3 VALUES (1,'1'),(2,'2');
SELECT DISTINCT t3.b FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
b
1
INSERT INTO t2 values (1),(2),(3);
INSERT INTO t3 VALUES (1,'1'),(2,'2'),(1,'1'),(2,'2');
explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
table type possible_keys key key_len ref rows Extra
t3 index a a 5 NULL 6 Using index; Using temporary
t2 index a a 4 NULL 5 Using index; Distinct
t1 eq_ref PRIMARY PRIMARY 4 t2.a 1 where used; Distinct
SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
a
1
create temporary table t4 select * from t3;
insert into t3 select * from t4;
insert into t4 select * from t3;
insert into t3 select * from t4;
insert into t4 select * from t3;
insert into t3 select * from t4;
insert into t4 select * from t3;
insert into t3 select * from t4;
explain select distinct t1.a from t1,t3 where t1.a=t3.a;
table type possible_keys key key_len ref rows Extra
t1 index PRIMARY PRIMARY 4 NULL 2 Using index; Using temporary
t3 ref a a 5 t1.a 10 Using index; Distinct
select distinct t1.a from t1,t3 where t1.a=t3.a;
a
1
2
select distinct 1 from t1,t3 where t1.a=t3.a;
1
1
drop table t1,t2,t3,t4;
CREATE TABLE t1 (name varchar(255));
INSERT INTO t1 VALUES ('aa'),('ab'),('ac'),('ad'),('ae');
SELECT DISTINCT * FROM t1 LIMIT 2;
name
aa
ab
SELECT DISTINCT name FROM t1 LIMIT 2;
name
aa
ab
SELECT DISTINCT 1 FROM t1 LIMIT 2;
1
1
drop table t1;
CREATE TABLE t1 (
ID int(11) NOT NULL auto_increment,
NAME varchar(75) DEFAULT '' NOT NULL,
LINK_ID int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (ID),
KEY NAME (NAME),
KEY LINK_ID (LINK_ID)
);
INSERT INTO t1 (ID, NAME, LINK_ID) VALUES (1,'Mike',0),(2,'Jack',0),(3,'Bill',0);
CREATE TABLE t2 (
ID int(11) NOT NULL auto_increment,
NAME varchar(150) DEFAULT '' NOT NULL,
PRIMARY KEY (ID),
KEY NAME (NAME)
);
SELECT DISTINCT
t2.id AS key_link_id,
t2.name AS link
FROM t1
LEFT JOIN t2 ON t1.link_id=t2.id
GROUP BY t1.id
ORDER BY link;
key_link_id link
NULL NULL
drop table t1,t2;
create table t1 (
id int not null,
name tinytext not null,
unique (id)
);
create table t2 (
id int not null,
idx int not null,
unique (id, idx)
);
create table t3 (
id int not null,
idx int not null,
unique (id, idx)
);
insert into t1 values (1,'yes'), (2,'no');
insert into t2 values (1,1);
insert into t3 values (1,1);
EXPLAIN
SELECT DISTINCT
t1.id
from
t1
straight_join
t2
straight_join
t3
straight_join
t1 as j_lj_t2 left join t2 as t2_lj
on j_lj_t2.id=t2_lj.id
straight_join
t1 as j_lj_t3 left join t3 as t3_lj
on j_lj_t3.id=t3_lj.id
WHERE
((t1.id=j_lj_t2.id AND t2_lj.id IS NULL) OR (t1.id=t2.id AND t2.idx=2))
AND ((t1.id=j_lj_t3.id AND t3_lj.id IS NULL) OR (t1.id=t3.id AND t3.idx=2));
table type possible_keys key key_len ref rows Extra
t1 index id id 4 NULL 2 Using index; Using temporary
t2 index id id 8 NULL 1 Using index; Distinct
@ -151,25 +281,58 @@ j_lj_t2 index id id 4 NULL 2 where used; Using index; Distinct
t2_lj index id id 8 NULL 1 where used; Using index; Distinct
j_lj_t3 index id id 4 NULL 2 where used; Using index; Distinct
t3_lj index id id 8 NULL 1 where used; Using index; Distinct
SELECT DISTINCT
t1.id
from
t1
straight_join
t2
straight_join
t3
straight_join
t1 as j_lj_t2 left join t2 as t2_lj
on j_lj_t2.id=t2_lj.id
straight_join
t1 as j_lj_t3 left join t3 as t3_lj
on j_lj_t3.id=t3_lj.id
WHERE
((t1.id=j_lj_t2.id AND t2_lj.id IS NULL) OR (t1.id=t2.id AND t2.idx=2))
AND ((t1.id=j_lj_t3.id AND t3_lj.id IS NULL) OR (t1.id=t3.id AND t3.idx=2));
id
2
drop table t1,t2,t3;
drop table if exists t1;
create table t1 (a int not null, b int not null, t time);
insert into t1 values (1,1,"00:06:15"),(1,2,"00:06:15"),(1,2,"00:30:15"),(1,3,"00:06:15"),(1,3,"00:30:15");
select a,sec_to_time(sum(time_to_sec(t))) from t1 group by a,b;
a sec_to_time(sum(time_to_sec(t)))
1 00:06:15
1 00:36:30
1 00:36:30
select distinct a,sec_to_time(sum(time_to_sec(t))) from t1 group by a,b;
a sec_to_time(sum(time_to_sec(t)))
1 00:06:15
1 00:36:30
create table t2 (a int not null primary key, b int);
insert into t2 values (1,1),(2,2),(3,3);
select t1.a,sec_to_time(sum(time_to_sec(t))) from t1 left join t2 on (t1.b=t2.a) group by t1.a,t2.b;
a sec_to_time(sum(time_to_sec(t)))
1 00:06:15
1 00:36:30
1 00:36:30
select distinct t1.a,sec_to_time(sum(time_to_sec(t))) from t1 left join t2 on (t1.b=t2.a) group by t1.a,t2.b;
a sec_to_time(sum(time_to_sec(t)))
1 00:06:15
1 00:36:30
drop table t1,t2;
create table t1 (a int not null,b char(5), c text);
insert into t1 (a) values (1),(2),(3),(4),(1),(2),(3),(4);
select distinct a from t1 group by b,a having a > 2 order by a desc;
a
4
3
select distinct a,c from t1 group by b,c,a having a > 2 order by a desc;
a c
4 NULL
3 NULL
drop table t1;

View File

@ -1,11 +1,48 @@
drop table if exists t1;
drop table if exists t1;
drop table t1;
Unknown table 't1'
create table t1(n int);
insert into t1 values(1);
create temporary table t1( n int);
insert into t1 values(2);
create table t1(n int);
Table 't1' already exists
drop table t1;
select * from t1;
n
1
drop database if exists foo;
create database foo;
drop database if exists foo;
create database foo;
create table foo.foo (n int);
insert into foo.foo values (4);
select * from foo.foo;
n
4
drop database if exists foo;
create database foo;
drop database foo;
drop database if exists foo;
flush tables with read lock;
create database foo;
Can't execute the query because you have a conflicting read lock
unlock tables;
create database foo;
show databases;
Database
foo
mysql
test
flush tables with read lock;
drop database foo;
Can't execute the query because you have a conflicting read lock
unlock tables;
drop database foo;
show databases;
Database
mysql
test
drop database foo;
Can't drop database 'foo'. Database doesn't exist

View File

@ -1,4 +1,10 @@
drop table if exists t1;
create table t1 (nr int(5) not null auto_increment,b blob,str char(10), primary key (nr));
select count(*) from t1;
count(*)
0
select * from t1;
nr b str
select * from t1 limit 0;
nr b str
drop table t1;

View File

@ -0,0 +1,25 @@
drop table if exists t1;
insert into t1 values(1);
Table 'test.t1' doesn't exist
delete from t1;
Table 'test.t1' doesn't exist
update t1 set a=1;
Table 'test.t1' doesn't exist
create table t1 (a int);
select count(test.t1.b) from t1;
Unknown column 'test.t1.b' in 'field list'
select count(not_existing_database.t1) from t1;
Unknown table 'not_existing_database' in field list
select count(not_existing_database.t1.a) from t1;
Unknown table 'not_existing_database.t1' in field list
select count(not_existing_database.t1.a) from not_existing_database.t1;
Table 'not_existing_database.t1' doesn't exist
select 1 from t1 order by 2;
Unknown column '2' in 'order clause'
select 1 from t1 group by 2;
Unknown column '2' in 'group statement'
select 1 from t1 order by t1.b;
Unknown column 't1.b' in 'order clause'
select count(*),b from t1;
Unknown column 'b' in 'field list'
drop table t1;

View File

@ -1,15 +1,30 @@
drop table if exists t1;
create table t1 (id int not null, str char(10), unique(str));
insert into t1 values (1, null),(2, null),(3, "foo"),(4, "bar");
select * from t1 where str is null;
id str
1 NULL
2 NULL
select * from t1 where str="foo";
id str
3 foo
explain select * from t1 where str is null;
table type possible_keys key key_len ref rows Extra
t1 ref str str 11 const 1 where used
explain select * from t1 where str="foo";
table type possible_keys key key_len ref rows Extra
t1 const str str 11 const 1
explain select * from t1 ignore key (str) where str="foo";
table type possible_keys key key_len ref rows Extra
t1 ALL str NULL NULL NULL 4 where used
explain select * from t1 use key (str,str) where str="foo";
table type possible_keys key key_len ref rows Extra
t1 const str str 11 const 1
explain select * from t1 use key (str,str,foo) where str="foo";
Key column 'foo' doesn't exist in table
explain select * from t1 ignore key (str,str,foo) where str="foo";
Key column 'foo' doesn't exist in table
drop table t1;
explain select 1;
Comment
No tables used

View File

@ -1,6 +1,30 @@
drop table if exists t1;
create temporary table t1(n int not null primary key);
drop table if exists t2;
create table t2(n int);
insert into t2 values(3);
select * from t1;
n
3
flush tables with read lock;
drop table t2;
Table 't2' was locked with a READ lock and can't be updated
drop table t2;
unlock tables;
drop database if exists foo;
create database foo;
create table foo.t1(n int);
insert into foo.t1 values (23);
flush tables with read lock;
drop database foo;
select * from foo.t1;
n
23
unlock tables;
create table t1 (n int);
flush tables with read lock;
insert into t1 values (345);
select * from t1;
n
345
drop table t1;

View File

@ -0,0 +1,15 @@
drop table if exists t1;
create table t1 (
a int not null references t2,
b int not null references t2 (c),
primary key (a,b),
foreign key (a) references t3 match full,
foreign key (a) references t3 match partial,
foreign key (a,b) references t3 (c,d) on delete no action
on update no action,
foreign key (a,b) references t3 (c,d) on update cascade,
foreign key (a,b) references t3 (c,d) on delete set default,
foreign key (a,b) references t3 (c,d) on update set null);
create index a on t1 (a);
create unique index b on t1 (a,b);
drop table t1;

View File

@ -1,18 +1,53 @@
drop table if exists t1,t2,t3;
CREATE TABLE t1 (a VARCHAR(200), b TEXT, FULLTEXT (a,b));
INSERT INTO t1 VALUES('MySQL has now support', 'for full-text search'),('Full-text indexes', 'are called collections'),('Only MyISAM tables','support collections'),('Function MATCH ... AGAINST()','is used to do a search'),('Full-text search in MySQL', 'implements vector space model');
select * from t1 where MATCH(a,b) AGAINST ("collections");
a b
Only MyISAM tables support collections
Full-text indexes are called collections
select * from t1 where MATCH(a,b) AGAINST ("indexes");
a b
Full-text indexes are called collections
select * from t1 where MATCH(a,b) AGAINST ("indexes collections");
a b
Full-text indexes are called collections
Only MyISAM tables support collections
delete from t1 where a like "MySQL%";
drop table t1;
CREATE TABLE t1 (
id int(11),
ticket int(11),
KEY ti (id),
KEY tit (ticket)
);
INSERT INTO t1 VALUES (2,3),(1,2);
CREATE TABLE t2 (
ticket int(11),
inhalt text,
KEY tig (ticket),
fulltext index tix (inhalt)
);
INSERT INTO t2 VALUES (1,'foo'),(2,'bar'),(3,'foobar');
select t1.id FROM t2 as ttxt,t1,t1 as ticket2
WHERE ticket2.id = ttxt.ticket AND t1.id = ticket2.ticket and
match(ttxt.inhalt) against ('foobar');
id
select t1.id FROM t2 as ttxt,t1 INNER JOIN t1 as ticket2 ON
ticket2.id = ttxt.ticket
WHERE t1.id = ticket2.ticket and match(ttxt.inhalt) against ('foobar');
id
INSERT INTO t1 VALUES (3,3);
select t1.id FROM t2 as ttxt,t1
INNER JOIN t1 as ticket2 ON ticket2.id = ttxt.ticket
WHERE t1.id = ticket2.ticket and
match(ttxt.inhalt) against ('foobar');
id
3
show keys from t2;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Comment
t2 1 tig 1 ticket A NULL NULL NULL
t2 1 tix 1 inhalt A NULL 1 NULL FULLTEXT
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`ticket` int(11) default NULL,
@ -20,8 +55,26 @@ t2 CREATE TABLE `t2` (
KEY `tig` (`ticket`),
FULLTEXT KEY `tix` (`inhalt`)
) TYPE=MyISAM
select * from t2 where MATCH inhalt AGAINST (NULL);
ticket inhalt
select * from t2 where MATCH inhalt AGAINST ('foobar');
ticket inhalt
3 foobar
select * from t2 having MATCH inhalt AGAINST ('foobar');
ticket inhalt
3 foobar
CREATE TABLE t3 (
ticket int(11),
inhalt text,
KEY tig (ticket),
fulltext index tix (inhalt)
);
select * from t2 where MATCH inhalt AGAINST (t2.inhalt);
Wrong arguments to AGAINST
select * from t2 where MATCH inhalt AGAINST (t2.inhalt);
Wrong arguments to AGAINST
select * from t2 where MATCH ticket AGAINST ('foobar');
Can't find FULLTEXT index matching the column list
select * from t2,t3 where MATCH (t2.inhalt,t3.inhalt) AGAINST ('foobar');
Wrong arguments to MATCH
drop table t1,t2,t3;

View File

@ -1,3 +1,28 @@
drop table if exists t1, t2;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL auto_increment,
q varchar(255) default NULL,
PRIMARY KEY (id)
);
INSERT INTO t1 VALUES (1,'aaaaaaaaa dsaass de');
INSERT INTO t1 VALUES (2,'ssde df s fsda sad er');
CREATE TABLE t2 (
id int(10) unsigned NOT NULL auto_increment,
id2 int(10) unsigned default NULL,
item varchar(255) default NULL,
PRIMARY KEY (id),
FULLTEXT KEY item(item)
);
INSERT INTO t2 VALUES (1,1,'sushi');
INSERT INTO t2 VALUES (2,1,'Bolo de Chocolate');
INSERT INTO t2 VALUES (3,1,'Feijoada');
INSERT INTO t2 VALUES (4,1,'Mousse de Chocolate');
INSERT INTO t2 VALUES (5,2,'um copo de Vodka');
INSERT INTO t2 VALUES (6,2,'um chocolate Snickers');
INSERT INTO t2 VALUES (7,1,'Bife');
INSERT INTO t2 VALUES (8,1,'Pizza de Salmao');
SELECT t1.q, t2.item, t2.id, MATCH t2.item AGAINST ('sushi') as x FROM t1, t2
WHERE (t2.id2 = t1.id) ORDER BY x DESC,t2.id;
q item id x
aaaaaaaaa dsaass de sushi 1 1.92378665219675
aaaaaaaaa dsaass de Bolo de Chocolate 2 0
@ -7,6 +32,8 @@ ssde df s fsda sad er um copo de Vodka 5 0
ssde df s fsda sad er um chocolate Snickers 6 0
aaaaaaaaa dsaass de Bife 7 0
aaaaaaaaa dsaass de Pizza de Salmao 8 0
SELECT t1.q, t2.item, t2.id, MATCH t2.item AGAINST ('sushi') as x FROM t2, t1
WHERE (t2.id2 = t1.id) ORDER BY x DESC,t2.id;
q item id x
aaaaaaaaa dsaass de sushi 1 1.92378665219675
aaaaaaaaa dsaass de Bolo de Chocolate 2 0
@ -16,3 +43,4 @@ ssde df s fsda sad er um copo de Vodka 5 0
ssde df s fsda sad er um chocolate Snickers 6 0
aaaaaaaaa dsaass de Bife 7 0
aaaaaaaaa dsaass de Pizza de Salmao 8 0
drop table t1, t2;

View File

@ -1,10 +1,41 @@
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
id mediumint unsigned NOT NULL auto_increment,
tag char(6) NOT NULL default '',
value text NOT NULL default '',
PRIMARY KEY (id),
KEY kt(tag),
KEY kv(value(15)),
FULLTEXT KEY kvf(value)
) TYPE=MyISAM;
DROP TABLE IF EXISTS t2;
CREATE TABLE t2 (
id_t2 mediumint unsigned NOT NULL default '0',
id_t1 mediumint unsigned NOT NULL default '0',
field_number tinyint unsigned NOT NULL default '0',
PRIMARY KEY (id_t2,id_t1,field_number),
KEY id_t1(id_t1)
) TYPE=MyISAM;
INSERT INTO t1 (tag,value) VALUES ('foo123','bar111');
INSERT INTO t2 VALUES (2231626,64280,0);
INSERT INTO t1 (tag,value) VALUES ('foo123','bar222');
INSERT INTO t2 VALUES (2231626,64281,0);
insert into t1 (tag,value) values ('bar345','baz333 ar');
insert into t2 values (12346, 3, 1);
select * from t1;
id tag value
1 foo123 bar111
2 foo123 bar222
3 bar345 baz333 ar
select * from t2;
id_t2 id_t1 field_number
12346 3 1
2231626 64280 0
2231626 64281 0
SELECT DISTINCT t2.id_t2
FROM t2, t1
WHERE MATCH (t1.value) AGAINST ('baz333')
AND t1.id = t2.id_t1;
id_t2
12346
DROP TABLE t1,t2;

View File

@ -1,5 +1,25 @@
CREATE TABLE t1 (
id VARCHAR(255) NOT NULL PRIMARY KEY,
sujet VARCHAR(255),
motsclefs TEXT,
texte MEDIUMTEXT,
FULLTEXT(sujet, motsclefs, texte)
);
INSERT INTO t1 VALUES('123','toto','essai','test');
INSERT INTO t1 VALUES('456','droit','penal','lawyer');
INSERT INTO t1 VALUES('789','aaaaa','bbbbb','cccccc');
CREATE TABLE t2 (
id VARCHAR(255) NOT NULL,
author VARCHAR(255) NOT NULL
);
INSERT INTO t2 VALUES('123', 'moi');
INSERT INTO t2 VALUES('123', 'lui');
INSERT INTO t2 VALUES('456', 'lui');
select match(t1.texte,t1.sujet,t1.motsclefs) against('droit')
from t1 left join t2 on t2.id=t1.id;
match(t1.texte,t1.sujet,t1.motsclefs) against('droit')
0
0
0.67003110026735
0
drop table t1, t2;

View File

@ -1,12 +1,30 @@
use test;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
a int(11) NOT NULL auto_increment,
b text,
c varchar(254) default NULL,
PRIMARY KEY (a),
FULLTEXT KEY bb(b),
FULLTEXT KEY cc(c),
FULLTEXT KEY a(b,c)
);
INSERT INTO t1 VALUES (1,'lala lolo lili','oooo aaaa pppp');
INSERT INTO t1 VALUES (2,'asdf fdsa','lkjh fghj');
INSERT INTO t1 VALUES (3,'qpwoei','zmxnvb');
SELECT a, MATCH b AGAINST ('lala lkjh') FROM t1;
a MATCH b AGAINST ('lala lkjh')
1 0.67003110026735
2 0
3 0
SELECT a, MATCH c AGAINST ('lala lkjh') FROM t1;
a MATCH c AGAINST ('lala lkjh')
1 0
2 0.67756324121582
3 0
SELECT a, MATCH b,c AGAINST ('lala lkjh') FROM t1;
a MATCH b,c AGAINST ('lala lkjh')
1 0.64840710366884
2 0.66266459031789
3 0
drop table t1;

View File

@ -1,14 +1,28 @@
use test;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
a INT AUTO_INCREMENT PRIMARY KEY,
message CHAR(20),
FULLTEXT(message)
) comment = 'original testcase by sroussey@network54.com';
INSERT INTO t1 (message) VALUES ("Testing"),("table"),("testbug"),
("steve"),("is"),("cool"),("steve is cool");
SELECT a, MATCH (message) AGAINST ('steve') FROM t1 WHERE MATCH (message) AGAINST ('steve');
a MATCH (message) AGAINST ('steve')
4 0.90587321329654
7 0.89568988462614
SELECT a, MATCH (message) AGAINST ('steve') FROM t1 WHERE MATCH (message) AGAINST ('steve') ORDER BY a;
a MATCH (message) AGAINST ('steve')
4 0.90587321329654
7 0.89568988462614
SELECT a, MATCH (message) AGAINST ('steve') FROM t1 WHERE a in (2,7,4) and MATCH (message) AGAINST ('steve') ORDER BY a DESC;
a MATCH (message) AGAINST ('steve')
7 0.89568988462614
4 0.90587321329654
SELECT a, MATCH (message) AGAINST ('steve') FROM t1 WHERE a=7 and MATCH (message) AGAINST ('steve') ORDER BY 1;
a MATCH (message) AGAINST ('steve')
7 0.89568988462614
SELECT a, MATCH (message) AGAINST ('steve') as rel FROM t1 ORDER BY rel;
a rel
1 0
2 0
@ -17,3 +31,4 @@ a rel
6 0
7 0.89568988462614
4 0.90587321329654
drop table t1;

View File

@ -1,2 +1,22 @@
drop table if exists test;
CREATE TABLE test (
gnr INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
url VARCHAR(80) DEFAULT '' NOT NULL,
shortdesc VARCHAR(200) DEFAULT '' NOT NULL,
longdesc text DEFAULT '' NOT NULL,
description VARCHAR(80) DEFAULT '' NOT NULL,
name VARCHAR(80) DEFAULT '' NOT NULL,
FULLTEXT(url,description,shortdesc,longdesc),
PRIMARY KEY(gnr)
);
insert into test (url,shortdesc,longdesc,description,name) VALUES
("http:/test.at", "kurz", "lang","desc", "name");
insert into test (url,shortdesc,longdesc,description,name) VALUES
("http:/test.at", "kurz", "","desc", "name");
update test set url='test', description='ddd', name='nam' where gnr=2;
update test set url='test', shortdesc='ggg', longdesc='mmm',
description='ddd', name='nam' where gnr=2;
check table test;
Table Op Msg_type Msg_text
test.test check status OK
drop table test;

View File

@ -1,3 +1,4 @@
show variables like "ft\_%";
Variable_name Value
ft_min_word_len 4
ft_max_word_len 254

View File

@ -1,2 +1,3 @@
select length(encrypt('foo', 'ff')) <> 0;
length(encrypt('foo', 'ff')) <> 0
1

View File

@ -1,12 +1,47 @@
drop table if exists t1;
CREATE TABLE t1 (
visitor_id int(10) unsigned DEFAULT '0' NOT NULL,
group_id int(10) unsigned DEFAULT '0' NOT NULL,
hits int(10) unsigned DEFAULT '0' NOT NULL,
sessions int(10) unsigned DEFAULT '0' NOT NULL,
ts timestamp(14),
PRIMARY KEY (visitor_id,group_id)
)/*! type=MyISAM */;
INSERT INTO t1 VALUES (465931136,7,2,2,20000318160952);
INSERT INTO t1 VALUES (173865424,2,2,2,20000318233615);
INSERT INTO t1 VALUES (173865424,8,2,2,20000318233615);
INSERT INTO t1 VALUES (173865424,39,2,2,20000318233615);
INSERT INTO t1 VALUES (173865424,7,2,2,20000318233615);
INSERT INTO t1 VALUES (173865424,3,2,2,20000318233615);
INSERT INTO t1 VALUES (173865424,6,2,2,20000318233615);
INSERT INTO t1 VALUES (173865424,60,2,2,20000318233615);
INSERT INTO t1 VALUES (173865424,1502,2,2,20000318233615);
INSERT INTO t1 VALUES (48985536,2,2,2,20000319013932);
INSERT INTO t1 VALUES (48985536,8,2,2,20000319013932);
INSERT INTO t1 VALUES (48985536,39,2,2,20000319013932);
INSERT INTO t1 VALUES (48985536,7,2,2,20000319013932);
INSERT INTO t1 VALUES (465931136,3,2,2,20000318160951);
INSERT INTO t1 VALUES (465931136,119,1,1,20000318160953);
INSERT INTO t1 VALUES (465931136,2,1,1,20000318160950);
INSERT INTO t1 VALUES (465931136,8,1,1,20000318160950);
INSERT INTO t1 VALUES (465931136,39,1,1,20000318160950);
INSERT INTO t1 VALUES (1092858576,14,1,1,20000319013445);
INSERT INTO t1 VALUES (357917728,3,2,2,20000319145026);
INSERT INTO t1 VALUES (357917728,7,2,2,20000319145027);
select visitor_id,max(ts) as mts from t1 group by visitor_id
having mts < DATE_SUB(NOW(),INTERVAL 3 MONTH);
visitor_id mts
48985536 20000319013932
173865424 20000318233615
357917728 20000319145027
465931136 20000318160953
1092858576 20000319013445
select visitor_id,max(ts) as mts from t1 group by visitor_id
having DATE_ADD(mts,INTERVAL 3 MONTH) < NOW();
visitor_id mts
48985536 20000319013932
173865424 20000318233615
357917728 20000319145027
465931136 20000318160953
1092858576 20000319013445
drop table t1;

View File

@ -1,15 +1,29 @@
select 0<=>0,0.0<=>0.0,"A"<=>"A",NULL<=>NULL;
0<=>0 0.0<=>0.0 "A"<=>"A" NULL<=>NULL
1 1 1 1
select 1<=>0,0<=>NULL,NULL<=>0;
1<=>0 0<=>NULL NULL<=>0
0 0 0
select 1.0<=>0.0,0.0<=>NULL,NULL<=>0.0;
1.0<=>0.0 0.0<=>NULL NULL<=>0.0
0 0 0
select "A"<=>"B","A"<=>NULL,NULL<=>"A";
"A"<=>"B" "A"<=>NULL NULL<=>"A"
0 0 0
drop table if exists t1,t2;
create table t1 (id int, value int);
create table t2 (id int, value int);
insert into t1 values (1,null);
insert into t2 values (1,null);
select t1.*, t2.*, t1.value<=>t2.value from t1, t2 where t1.id=t2.id and t1.id=1;
id value id value t1.value<=>t2.value
1 NULL 1 NULL 1
select * from t1 where id <=>id;
id value
1 NULL
select * from t1 where value <=> value;
id value
1 NULL
select * from t1 where id <=> value or value<=>id;
id value
drop table t1,t2;

View File

@ -1,3 +1,11 @@
create table t1 (grp int, a bigint unsigned, c char(10) not null);
insert into t1 values (1,1,"a");
insert into t1 values (2,2,"b");
insert into t1 values (2,3,"c");
insert into t1 values (3,4,"E");
insert into t1 values (3,5,"C");
insert into t1 values (3,6,"D");
select a,c,sum(a) from t1 group by a;
a c sum(a)
1 a 1
2 b 2
@ -5,9 +13,12 @@ a c sum(a)
4 E 4
5 C 5
6 D 6
select a,c,sum(a) from t1 where a > 10 group by a;
a c sum(a)
select sum(a) from t1 where a > 10;
sum(a)
NULL
select a from t1 order by rand(10);
a
1
3
@ -15,6 +26,7 @@ a
5
2
4
select distinct a from t1 order by rand(10);
a
1
3
@ -22,65 +34,119 @@ a
5
2
4
select count(distinct a),count(distinct grp) from t1;
count(distinct a) count(distinct grp)
6 3
insert into t1 values (null,null,'');
select count(distinct a),count(distinct grp) from t1;
count(distinct a) count(distinct grp)
6 3
select sum(a),count(a),avg(a),std(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1;
sum(a) count(a) avg(a) std(a) bit_or(a) bit_and(a) min(a) max(a) min(c) max(c)
21 6 3.5000 1.7078 7 0 1 6 E
select grp, sum(a),count(a),avg(a),std(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1 group by grp;
grp sum(a) count(a) avg(a) std(a) bit_or(a) bit_and(a) min(a) max(a) min(c) max(c)
NULL 0 0 NULL NULL 0 0 NULL NULL
1 1 1 1.0000 0.0000 1 1 1 1 a a
2 5 2 2.5000 0.5000 3 2 2 3 b c
3 15 3 5.0000 0.8165 7 4 4 6 C E
select grp, sum(a)+count(a)+avg(a)+std(a)+bit_or(a)+bit_and(a)+min(a)+max(a)+min(c)+max(c) as sum from t1 group by grp;
grp sum
NULL NULL
1 7
2 20
3 44.816496580928
create table t2 (grp int, a bigint unsigned, c char(10));
insert into t2 select grp,max(a)+max(grp),max(c) from t1 group by grp;
replace into t2 select grp, a, c from t1 limit 2,1;
select * from t2;
grp a c
NULL NULL
1 2 a
2 5 c
3 9 E
2 3 c
drop table t1,t2;
CREATE TABLE t1 (id int(11),value1 float(10,2));
INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00);
CREATE TABLE t2 (id int(11),name char(20));
INSERT INTO t2 VALUES (1,'Set One'),(2,'Set Two');
select id, avg(value1), std(value1) from t1 group by id;
id avg(value1) std(value1)
1 1.000000 0.816497
2 11.000000 0.816497
select name, avg(value1), std(value1) from t1, t2 where t1.id = t2.id group by t1.id;
name avg(value1) std(value1)
Set One 1.000000 0.816497
Set Two 11.000000 0.816497
drop table t1,t2;
create table t1 (id int not null);
create table t2 (id int not null,rating int null);
insert into t1 values(1),(2),(3);
insert into t2 values(1, 3),(2, NULL),(2, NULL),(3, 2),(3, NULL);
select t1.id, avg(rating) from t1 left join t2 on ( t1.id = t2.id ) group by t1.id;
id avg(rating)
1 3.0000
2 NULL
3 2.0000
drop table t1,t2;
create table t1 (a smallint(6) primary key, c char(10), b text);
INSERT INTO t1 VALUES (1,'1','1');
INSERT INTO t1 VALUES (2,'2','2');
INSERT INTO t1 VALUES (4,'4','4');
select count(*) from t1;
count(*)
3
select count(*) from t1 where a = 1;
count(*)
1
select count(*) from t1 where a = 100;
count(*)
0
select count(*) from t1 where a >= 10;
count(*)
0
select count(a) from t1 where a = 1;
count(a)
1
select count(a) from t1 where a = 100;
count(a)
0
select count(a) from t1 where a >= 10;
count(a)
0
select count(b) from t1 where b >= 2;
count(b)
2
select count(b) from t1 where b >= 10;
count(b)
0
select count(c) from t1 where c = 10;
count(c)
0
drop table t1;
CREATE TABLE t1 (d DATETIME, i INT);
INSERT INTO t1 VALUES (NOW(), 1);
SELECT COUNT(i), i, COUNT(i)*i FROM t1 GROUP BY i;
COUNT(i) i COUNT(i)*i
1 1 1
SELECT COUNT(i), (i+0), COUNT(i)*(i+0) FROM t1 GROUP BY i;
COUNT(i) (i+0) COUNT(i)*(i+0)
1 1 1
DROP TABLE t1;
create table t1 (
num float(5,2),
user char(20)
);
insert into t1 values (10.3,'nem'),(20.53,'monty'),(30.23,'sinisa');
insert into t1 values (30.13,'nem'),(20.98,'monty'),(10.45,'sinisa');
insert into t1 values (5.2,'nem'),(8.64,'monty'),(11.12,'sinisa');
select sum(num) from t1;
sum(num)
147.58
select sum(num) from t1 group by user;
sum(num)
50.15
45.63
51.80
drop table t1;

View File

@ -1,14 +1,27 @@
CREATE TABLE t1 (field char(1));
INSERT INTO t1 VALUES ('A'),(NULL);
SELECT * from t1 WHERE field IN (NULL);
field
SELECT * from t1 WHERE field NOT IN (NULL);
field
A
SELECT * from t1 where field = field;
field
A
SELECT * from t1 where field <=> field;
field
A
NULL
DELETE FROM t1 WHERE field NOT IN (NULL);
SELECT * FROM t1;
field
NULL
drop table t1;
create table t1 (id int(10) primary key);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9);
select * from t1 where id in (2,5,9);
id
2
5
9
drop table t1;

View File

@ -1,10 +1,18 @@
drop table if exists t1;
create table t1 (a varchar(10), key(a));
insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
select * from t1 where a like "abc%";
a
abc
abcd
select * from t1 where a like "ABC%";
a
abc
abcd
select * from t1 where a like "test%";
a
test
select * from t1 where a like "te_t";
a
test
drop table t1;

View File

@ -1,22 +1,33 @@
select floor(5.5),floor(-5.5);
floor(5.5) floor(-5.5)
5 -6
select ceiling(5.5),ceiling(-5.5);
ceiling(5.5) ceiling(-5.5)
6 -5
select truncate(52.64,1),truncate(52.64,2),truncate(52.64,-1),truncate(52.64,-2);
truncate(52.64,1) truncate(52.64,2) truncate(52.64,-1) truncate(52.64,-2)
52.6 52.64 50 0
select round(5.5),round(-5.5);
round(5.5) round(-5.5)
6 -6
select round(5.64,1),round(5.64,2),round(5.64,-1),round(5.64,-2);
round(5.64,1) round(5.64,2) round(5.64,-1) round(5.64,-2)
5.6 5.64 10 0
select abs(-10), sign(-5), sign(5), sign(0);
abs(-10) sign(-5) sign(5) sign(0)
10 -1 1 0
select log(exp(10)),exp(log(sqrt(10))*2);
log(exp(10)) exp(log(sqrt(10))*2)
10.000000 10.000000
select pow(10,log10(10)),power(2,4);
pow(10,log10(10)) power(2,4)
10.000000 16.000000
select rand(999999),rand();
rand(999999) rand()
0.18435012473199 0.76373626176616
select pi(),sin(pi()/2),cos(pi()/2),abs(tan(pi())),cot(1),asin(1),acos(0),atan(1);
PI() sin(pi()/2) cos(pi()/2) abs(tan(pi())) cot(1) asin(1) acos(0) atan(1)
3.141593 1.000000 0.000000 0.000000 0.64209262 1.570796 1.570796 0.785398
select degrees(pi()),radians(360);
degrees(pi()) radians(360)
180 6.2831853071796

View File

@ -1,8 +1,12 @@
select format(1.5555,0),format(123.5555,1),format(1234.5555,2),format(12345.5555,3),format(123456.5555,4),format(1234567.5555,5),format("12345.2399",2);
format(1.5555,0) format(123.5555,1) format(1234.5555,2) format(12345.5555,3) format(123456.5555,4) format(1234567.5555,5) format("12345.2399",2)
2 123.6 1,234.56 12,345.556 123,456.5555 1,234,567.55550 12,345.24
select inet_ntoa(inet_aton("255.255.255.255.255.255.255.255"));
inet_ntoa(inet_aton("255.255.255.255.255.255.255.255"))
255.255.255.255.255.255.255.255
select inet_aton("255.255.255.255.255"),inet_aton("255.255.1.255"),inet_aton("0.1.255");
inet_aton("255.255.255.255.255") inet_aton("255.255.1.255") inet_aton("0.1.255")
1099511627775 4294902271 511
select inet_ntoa(1099511627775),inet_ntoa(4294902271),inet_ntoa(511);
inet_ntoa(1099511627775) inet_ntoa(4294902271) inet_ntoa(511)
255.255.255.255.255 255.255.1.255 0.0.1.255

View File

@ -1,6 +1,9 @@
select 1+1,1-1,1+1*2,8/5,8%5,mod(8,5),mod(8,5)|0,-(1+1)*-2;
1+1 1-1 1+1*2 8/5 8%5 mod(8,5) mod(8,5)|0 -(1+1)*-2
2 0 3 1.60 3 3 3 4
select 1 | (1+1),5 & 3,bit_count(7) ;
1 | (1+1) 5 & 3 bit_count(7)
3 1 3
select 1 << 32,1 << 63, 1 << 64, 4 >> 2, 4 >> 63, 1<< 63 >> 60;
1 << 32 1 << 63 1 << 64 4 >> 2 4 >> 63 1<< 63 >> 60
4294967296 -9223372036854775808 0 1 0 8

View File

@ -1,3 +1,20 @@
drop table if exists t1;
create table t1 (s1 char(64),s2 char(64));
insert into t1 values('aaa','aaa');
insert into t1 values('aaa|qqq','qqq');
insert into t1 values('gheis','^[^a-dXYZ]+$');
insert into t1 values('aab','^aa?b');
insert into t1 values('Baaan','^Ba*n');
insert into t1 values('aaa','qqq|aaa');
insert into t1 values('qqq','qqq|aaa');
insert into t1 values('bbb','qqq|aaa');
insert into t1 values('bbb','qqq');
insert into t1 values('aaa','aba');
insert into t1 values(null,'abc');
insert into t1 values('def',null);
insert into t1 values(null,null);
insert into t1 values('ghi','ghi[');
select HIGH_PRIORITY s1 regexp s2 from t1;
s1 regexp s2
1
1
@ -13,13 +30,25 @@ NULL
NULL
NULL
NULL
drop table t1;
create table t1 (xxx char(128));
insert into t1 (xxx) values('this is a test of some long text to see what happens');
select * from t1 where xxx regexp('is a test of some long text to');
xxx
this is a test of some long text to see what happens
select * from t1 where xxx regexp('is a test of some long text to ');
xxx
this is a test of some long text to see what happens
select * from t1 where xxx regexp('is a test of some long text to s');
xxx
this is a test of some long text to see what happens
select * from t1 where xxx regexp('is a test of some long text to se');
xxx
this is a test of some long text to see what happens
drop table t1;
create table t1 (xxx char(128));
insert into t1 (xxx) values('this is some text: to test - out.reg exp (22/45)');
select * from t1 where xxx REGEXP '^this is some text: to test - out\\.reg exp [[(][0-9]+[/\\][0-9]+[])][ ]*$';
xxx
this is some text: to test - out.reg exp (22/45)
drop table t1;

View File

@ -1,18 +1,27 @@
select interval(55,10,20,30,40,50,60,70,80,90,100),interval(3,1,1+1,1+1+1+1),field("IBM","NCA","ICL","SUN","IBM","DIGITAL"),field("A","B","C"),elt(2,"ONE","TWO","THREE"),interval(0,1,2,3,4),elt(1,1,2,3)|0,elt(1,1.1,1.2,1.3)+0;
interval(55,10,20,30,40,50,60,70,80,90,100) interval(3,1,1+1,1+1+1+1) field("IBM","NCA","ICL","SUN","IBM","DIGITAL") field("A","B","C") elt(2,"ONE","TWO","THREE") interval(0,1,2,3,4) elt(1,1,2,3)|0 elt(1,1.1,1.2,1.3)+0
5 2 4 0 TWO 0 1 1.1
select find_in_set("b","a,b,c"),find_in_set("c","a,b,c"),find_in_set("dd","a,bbb,dd"),find_in_set("bbb","a,bbb,dd");
find_in_set("b","a,b,c") find_in_set("c","a,b,c") find_in_set("dd","a,bbb,dd") find_in_set("bbb","a,bbb,dd")
2 3 3 2
select find_in_set("d","a,b,c"),find_in_set("dd","a,bbb,d"),find_in_set("bb","a,bbb,dd");
find_in_set("d","a,b,c") find_in_set("dd","a,bbb,d") find_in_set("bb","a,bbb,dd")
0 0 0
select make_set(0,'a','b','c'),make_set(-1,'a','b','c'),make_set(1,'a','b','c'),make_set(2,'a','b','c'),make_set(1+2,concat('a','b'),'c');
make_set(0,'a','b','c') make_set(-1,'a','b','c') make_set(1,'a','b','c') make_set(2,'a','b','c') make_set(1+2,concat('a','b'),'c')
a,b,c a b ab,c
select make_set(NULL,'a','b','c'),make_set(1|4,'a',NULL,'c'),make_set(1+2,'a',NULL,'c');
make_set(NULL,'a','b','c') make_set(1|4,'a',NULL,'c') make_set(1+2,'a',NULL,'c')
NULL a,c a
select export_set(9,"Y","N","-",5),export_set(9,"Y","N"),export_set(9,"Y","N","");
export_set(9,"Y","N","-",5) export_set(9,"Y","N") export_set(9,"Y","N","")
Y-N-N-Y-N Y,N,N,Y,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N YNNYNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
select elt(2,1),field(NULL,"a","b","c");
elt(2,1) field(NULL,"a","b","c")
NULL 0
select find_in_set("","a,b,c"),find_in_set("","a,b,c,"),find_in_set("",",a,b,c");
find_in_set("","a,b,c") find_in_set("","a,b,c,") find_in_set("",",a,b,c")
0 4 1
select find_in_set("abc","abc"),find_in_set("ab","abc"),find_in_set("abcd","abc");
find_in_set("abc","abc") find_in_set("ab","abc") find_in_set("abcd","abc")
1 0 0

View File

@ -1,112 +1,186 @@
drop table if exists t1;
select 'hello',"'hello'",'""hello""','''h''e''l''l''o''',"hel""lo",'hel\'lo';
hello 'hello' ""hello"" 'h'e'l'l'o' hel"lo hel'lo
hello 'hello' ""hello"" 'h'e'l'l'o' hel"lo hel'lo
select 'hello' 'monty';
hello
hellomonty
select length('\n\t\r\b\0\_\%\\');
length('\n\t\r\b\0\_\%\\')
10
select concat('monty',' was here ','again'),length('hello'),char(ascii('h'));
concat('monty',' was here ','again') length('hello') char(ascii('h'))
monty was here again 5 h
select locate('he','hello'),locate('he','hello',2),locate('lo','hello',2) ;
locate('he','hello') locate('he','hello',2) locate('lo','hello',2)
1 0 4
select instr('hello','he');
instr('hello','he')
1
select position('ll' in 'hello'),position('a' in 'hello');
position('ll' in 'hello') position('a' in 'hello')
3 0
select left('hello',2),right('hello',2),substring('hello',2,2),mid('hello',1,5) ;
left('hello',2) right('hello',2) substring('hello',2,2) mid('hello',1,5)
he lo el hello
select concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1)) ;
concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',substring('monty',5,1))
happy
select substring_index('www.tcx.se','.',-2),substring_index('www.tcx.se','.',1);
substring_index('www.tcx.se','.',-2) substring_index('www.tcx.se','.',1)
tcx.se www
select substring_index('www.tcx.se','tcx',1),substring_index('www.tcx.se','tcx',-1);
substring_index('www.tcx.se','tcx',1) substring_index('www.tcx.se','tcx',-1)
www. .se
select substring_index('.tcx.se','.',-2),substring_index('.tcx.se','.tcx',-1);
substring_index('.tcx.se','.',-2) substring_index('.tcx.se','.tcx',-1)
tcx.se .se
select concat(':',ltrim(' left '),':',rtrim(' right '),':');
concat(':',ltrim(' left '),':',rtrim(' right '),':')
:left : right:
select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':')
:left: right:
select concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':');
concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':')
:m:y:s:
select concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':');
concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':')
:my:sql:
select concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':');
concat(':',trim(LEADING '.*' FROM '.*my'),':',trim(TRAILING '.*' FROM 'sql.*.*'),':')
:my:sql:
select TRIM("foo" FROM "foo"), TRIM("foo" FROM "foook"), TRIM("foo" FROM "okfoo");
TRIM("foo" FROM "foo") TRIM("foo" FROM "foook") TRIM("foo" FROM "okfoo")
ok ok
select concat_ws(', ','monty','was here','again');
concat_ws(', ','monty','was here','again')
monty, was here, again
select concat_ws(NULL,'a'),concat_ws(',',NULL,'');
concat_ws(NULL,'a') concat_ws(',',NULL,'')
NULL
select concat_ws(',','',NULL,'a');
concat_ws(',','',NULL,'a')
a
SELECT CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"');
CONCAT('"',CONCAT_WS('";"',repeat('a',60),repeat('b',60),repeat('c',60),repeat('d',100)), '"')
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";"cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc";"dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
select insert('txs',2,1,'hi'),insert('is ',4,0,'a'),insert('txxxxt',2,4,'es');
insert('txs',2,1,'hi') insert('is ',4,0,'a') insert('txxxxt',2,4,'es')
this is a test
select replace('aaaa','a','b'),replace('aaaa','aa','b'),replace('aaaa','a','bb'),replace('aaaa','','b'),replace('bbbb','a','c');
replace('aaaa','a','b') replace('aaaa','aa','b') replace('aaaa','a','bb') replace('aaaa','','b') replace('bbbb','a','c')
bbbb bb bbbbbbbb aaaa bbbb
select replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL') ;
replace(concat(lcase(concat('THIS',' ','IS',' ','A',' ')),ucase('false'),' ','test'),'FALSE','REAL')
this is a REAL test
select soundex(''),soundex('he'),soundex('hello all folks');
soundex('') soundex('he') soundex('hello all folks')
H000 H4142
select password('test'),length(encrypt('test')),encrypt('test','aa');
password('test') length(encrypt('test')) encrypt('test','aa')
378b243e220ca493 13 aaqPiZY5xR5l.
select md5('hello');
md5('hello')
5d41402abc4b2a76b9719d911017c592
select repeat('monty',5),concat('*',space(5),'*');
repeat('monty',5) concat('*',space(5),'*')
montymontymontymontymonty * *
select reverse('abc'),reverse('abcd');
reverse('abc') reverse('abcd')
cba dcba
select rpad('a',4,'1'),rpad('a',4,'12'),rpad('abcd',3,'12');
rpad('a',4,'1') rpad('a',4,'12') rpad('abcd',3,'12')
a111 a121 abc
select lpad('a',4,'1'),lpad('a',4,'12'),lpad('abcd',3,'12');
lpad('a',4,'1') lpad('a',4,'12') lpad('abcd',3,'12')
111a 121a abc
select rpad(741653838,17,'0'),lpad(741653838,17,'0');
rpad(741653838,17,'0') lpad(741653838,17,'0')
74165383800000000 00000000741653838
select rpad('abcd',7,'ab'),lpad('abcd',7,'ab');
rpad('abcd',7,'ab') lpad('abcd',7,'ab')
abcdaba abaabcd
select rpad('abcd',1,'ab'),lpad('abcd',1,'ab');
rpad('abcd',1,'ab') lpad('abcd',1,'ab')
a a
select LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD'),GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD');
LEAST(NULL,'HARRY','HARRIOT',NULL,'HAROLD') GREATEST(NULL,'HARRY','HARRIOT',NULL,'HAROLD')
HAROLD HARRY
select least(1,2,3) | greatest(16,32,8), least(5,4)*1,greatest(-1.0,1.0)*1,least(3,2,1)*1.0,greatest(1,1.1,1.0),least("10",9),greatest("A","B","0");
least(1,2,3) | greatest(16,32,8) least(5,4)*1 greatest(-1.0,1.0)*1 least(3,2,1)*1.0 greatest(1,1.1,1.0) least("10",9) greatest("A","B","0")
33 4 1.0 1.0 1.1 9 B
select decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000);
decode(encode(repeat("a",100000),"monty"),"monty")=repeat("a",100000)
1
select decode(encode("abcdef","monty"),"monty")="abcdef";
decode(encode("abcdef","monty"),"monty")="abcdef"
1
select reverse("");
reverse("")
select insert("aa",100,1,"b"),insert("aa",1,3,"b"),left("aa",-1),substring("a",1,2);
insert("aa",100,1,"b") insert("aa",1,3,"b") left("aa",-1) substring("a",1,2)
aa b a
select elt(2,1),field(NULL,"a","b","c"),reverse("");
elt(2,1) field(NULL,"a","b","c") reverse("")
NULL 0
select locate("a","b",2),locate("","a",1);
locate("a","b",2) locate("","a",1)
0 1
select ltrim("a"),rtrim("a"),trim(BOTH "" from "a"),trim(BOTH " " from "a");
ltrim("a") rtrim("a") trim(BOTH "" from "a") trim(BOTH " " from "a")
a a a a
select concat("1","2")|0,concat("1",".5")+0.0;
concat("1","2")|0 concat("1",".5")+0.0
12 1.5
select substring_index("www.tcx.se","",3);
substring_index("www.tcx.se","",3)
select length(repeat("a",100000000)),length(repeat("a",1000*64));
length(repeat("a",100000000)) length(repeat("a",1000*64))
NULL 64000
select position("0" in "baaa" in (1)),position("0" in "1" in (1,2,3)),position("sql" in ("mysql"));
position("0" in "baaa" in (1)) position("0" in "1" in (1,2,3)) position("sql" in ("mysql"))
1 0 3
select position(("1" in (1,2,3)) in "01");
position(("1" in (1,2,3)) in "01")
2
select length(repeat("a",65500)),length(concat(repeat("a",32000),repeat("a",32000))),length(replace("aaaaa","a",concat(repeat("a",10000)))),length(insert(repeat("a",40000),1,30000,repeat("b",50000)));
length(repeat("a",65500)) length(concat(repeat("a",32000),repeat("a",32000))) length(replace("aaaaa","a",concat(repeat("a",10000)))) length(insert(repeat("a",40000),1,30000,repeat("b",50000)))
65500 64000 50000 60000
select length(repeat("a",1000000)),length(concat(repeat("a",32000),repeat("a",32000),repeat("a",32000))),length(replace("aaaaa","a",concat(repeat("a",32000)))),length(insert(repeat("a",48000),1,1000,repeat("a",48000)));
length(repeat("a",1000000)) length(concat(repeat("a",32000),repeat("a",32000),repeat("a",32000))) length(replace("aaaaa","a",concat(repeat("a",32000)))) length(insert(repeat("a",48000),1,1000,repeat("a",48000)))
1000000 96000 160000 95000
create table t1 ( domain char(50) );
insert into t1 VALUES ("hello.de" ), ("test.de" );
select domain from t1 where concat('@', trim(leading '.' from concat('.', domain))) = '@hello.de';
domain
hello.de
select domain from t1 where concat('@', trim(leading '.' from concat('.', domain))) = '@test.de';
domain
test.de
drop table t1;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL,
title varchar(255) default NULL,
prio int(10) unsigned default NULL,
category int(10) unsigned default NULL,
program int(10) unsigned default NULL,
bugdesc text,
created datetime default NULL,
modified timestamp(14) NOT NULL,
bugstatus int(10) unsigned default NULL,
submitter int(10) unsigned default NULL
) TYPE=MyISAM;
INSERT INTO t1 VALUES (1,'Link',1,1,1,'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa','2001-02-28 08:40:16',20010228084016,0,4);
SELECT CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified,bugstatus,submitter), '"') FROM t1;
CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified,bugstatus,submitter), '"')
"Link";"1";"1";"1";"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"2001-02-28 08:40:16";"20010228084016";"0";"4"
SELECT CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugstatus,submitter), '"') FROM t1;
CONCAT('"',CONCAT_WS('";"',title,prio,category,program,bugstatus,submitter), '"')
"Link";"1";"1";"1";"0";"4"
SELECT CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified,bugstatus,submitter) FROM t1;
CONCAT_WS('";"',title,prio,category,program,bugdesc,created,modified,bugstatus,submitter)
Link";"1";"1";"1";"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";"2001-02-28 08:40:16";"20010228084016";"0";"4
drop table t1;

View File

@ -1,4 +1,6 @@
select database(),user();
database() user()
test root@localhost
select version()>="3.23.29";
version()>="3.23.29"
1

View File

@ -1,38 +1,61 @@
select 0=0,1>0,1>=1,1<0,1<=0,1!=0,strcmp("abc","abcd"),strcmp("b","a"),strcmp("a","a") ;
0=0 1>0 1>=1 1<0 1<=0 1!=0 strcmp("abc","abcd") strcmp("b","a") strcmp("a","a")
1 1 1 0 0 1 -1 1 0
select "a"<"b","a"<="b","b">="a","b">"a","a"="A","a"<>"b";
"a"<"b" "a"<="b" "b">="a" "b">"a" "a"="A" "a"<>"b"
1 1 1 1 1 1
select "a "="A", "A "="a", "a " <= "A b";
"a "="A" "A "="a" "a " <= "A b"
1 1 1
select "abc" like "a%", "abc" not like "%d%", "a%" like "a\%","abc%" like "a%\%","abcd" like "a%b_%d", "a" like "%%a","abcde" like "a%_e","abc" like "abc%";
"abc" like "a%" "abc" not like "%d%" "a%" like "a\%" "abc%" like "a%\%" "abcd" like "a%b_%d" "a" like "%%a" "abcde" like "a%_e" "abc" like "abc%"
1 1 1 1 1 1 1 1
select "a" like "%%b","a" like "%%ab","ab" like "a\%", "ab" like "_", "ab" like "ab_", "abc" like "%_d", "abc" like "abc%d";
"a" like "%%b" "a" like "%%ab" "ab" like "a\%" "ab" like "_" "ab" like "ab_" "abc" like "%_d" "abc" like "abc%d"
0 0 0 0 0 0 0
select '?' like '|%', '?' like '|%' ESCAPE '|', '%' like '|%', '%' like '|%' ESCAPE '|', '%' like '%';
'?' like '|%' '?' like '|%' ESCAPE '|' '%' like '|%' '%' like '|%' ESCAPE '|' '%' like '%'
0 0 0 1 1
select 'abc' like '%c','abcabc' like '%c', "ab" like "", "ab" like "a", "ab" like "ab";
'abc' like '%c' 'abcabc' like '%c' "ab" like "" "ab" like "a" "ab" like "ab"
1 1 0 0 1
select "Det här är svenska" regexp "h[[:alpha:]]+r", "aba" regexp "^(a|b)*$";
"Det här är svenska" regexp "h[[:alpha:]]+r" "aba" regexp "^(a|b)*$"
1 1
select "aba" regexp concat("^","a");
"aba" regexp concat("^","a")
1
select !0,NOT 0=1,!(0=0),1 AND 1,1 && 0,0 OR 1,1 || NULL, 1=1 or 1=1 and 1=0;
!0 NOT 0=1 !(0=0) 1 AND 1 1 && 0 0 OR 1 1 || NULL 1=1 or 1=1 and 1=0
1 1 0 1 0 1 1 1
select IF(0,"ERROR","this"),IF(1,"is","ERROR"),IF(NULL,"ERROR","a"),IF(1,2,3)|0,IF(1,2.0,3.0)+0 ;
IF(0,"ERROR","this") IF(1,"is","ERROR") IF(NULL,"ERROR","a") IF(1,2,3)|0 IF(1,2.0,3.0)+0
this is a 2 2.0
select 2 between 1 and 3, "monty" between "max" and "my",2=2 and "monty" between "max" and "my" and 3=3;
2 between 1 and 3 "monty" between "max" and "my" 2=2 and "monty" between "max" and "my" and 3=3
1 1 1
select 'b' between 'a' and 'c', 'B' between 'a' and 'c';
'b' between 'a' and 'c' 'B' between 'a' and 'c'
1 1
select 2 in (3,2,5,9,5,1),"monty" in ("david","monty","allan"), 1.2 in (1.4,1.2,1.0);
2 in (3,2,5,9,5,1) "monty" in ("david","monty","allan") 1.2 in (1.4,1.2,1.0)
1 1 1
select -1.49 or -1.49,0.6 or 0.6;
-1.49 or -1.49 0.6 or 0.6
1 1
select 5 between 0 and 10 between 0 and 1,(5 between 0 and 10) between 0 and 1;
5 between 0 and 10 between 0 and 1 (5 between 0 and 10) between 0 and 1
0 1
select 1 and 2 between 2 and 10, 2 between 2 and 10 and 1;
1 and 2 between 2 and 10 2 between 2 and 10 and 1
1 1
select 1 and 0 or 2, 2 or 1 and 0;
1 and 0 or 2 2 or 1 and 0
1 1
drop table if exists t1;
create table t1 (num double(12,2));
insert into t1 values (144.54);
select sum(if(num is null,0.00,num)) from t1;
sum(if(num is null,0.00,num))
144.54
drop table t1;

View File

@ -1,218 +1,341 @@
drop table if exists t1,t2;
select from_days(to_days("960101")),to_days(960201)-to_days("19960101"),to_days(date_add(curdate(), interval 1 day))-to_days(curdate()),weekday("1997-11-29");
from_days(to_days("960101")) to_days(960201)-to_days("19960101") to_days(date_add(curdate(), interval 1 day))-to_days(curdate()) weekday("1997-11-29")
1996-01-01 31 1 5
select period_add("9602",-12),period_diff(199505,"9404") ;
period_add("9602",-12) period_diff(199505,"9404")
199502 13
select now()-now(),weekday(curdate())-weekday(now()),unix_timestamp()-unix_timestamp(now());
now()-now() weekday(curdate())-weekday(now()) unix_timestamp()-unix_timestamp(now())
0 0 0
select from_unixtime(unix_timestamp("1994-03-02 10:11:12")),from_unixtime(unix_timestamp("1994-03-02 10:11:12"),"%Y-%m-%d %h:%i:%s"),from_unixtime(unix_timestamp("1994-03-02 10:11:12"))+0;
from_unixtime(unix_timestamp("1994-03-02 10:11:12")) from_unixtime(unix_timestamp("1994-03-02 10:11:12"),"%Y-%m-%d %h:%i:%s") from_unixtime(unix_timestamp("1994-03-02 10:11:12"))+0
1994-03-02 10:11:12 1994-03-02 10:11:12 19940302101112
select sec_to_time(9001),sec_to_time(9001)+0,time_to_sec("15:12:22"),
sec_to_time(time_to_sec("0:30:47")/6.21);
sec_to_time(9001) sec_to_time(9001)+0 time_to_sec("15:12:22") sec_to_time(time_to_sec("0:30:47")/6.21)
02:30:01 23001 54742 00:04:57
select now()-curdate()*1000000-curtime();
now()-curdate()*1000000-curtime()
0
select strcmp(current_timestamp(),concat(current_date()," ",current_time()));
strcmp(current_timestamp(),concat(current_date()," ",current_time()))
0
select date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w");
date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w")
January Thursday 2nd 1997 97 01 02 03 04 05 4
select date_format("1997-01-02", concat("%M %W %D ","%Y %y %m %d %h %i %s %w"));
date_format("1997-01-02", concat("%M %W %D ","%Y %y %m %d %h %i %s %w"))
January Thursday 2nd 1997 97 01 02 12 00 00 4
select dayofmonth("1997-01-02"),dayofmonth(19970323);
dayofmonth("1997-01-02") dayofmonth(19970323)
2 23
select month("1997-01-02"),year("98-02-03"),dayofyear("1997-12-31");
month("1997-01-02") year("98-02-03") dayofyear("1997-12-31")
1 1998 365
select month("2001-02-00"),year("2001-00-00");
month("2001-02-00") year("2001-00-00")
2 2001
select DAYOFYEAR("1997-03-03"), WEEK("1998-03-03"), QUARTER(980303);
DAYOFYEAR("1997-03-03") WEEK("1998-03-03") QUARTER(980303)
62 9 1
select HOUR("1997-03-03 23:03:22"), MINUTE("23:03:22"), SECOND(230322);
HOUR("1997-03-03 23:03:22") MINUTE("23:03:22") SECOND(230322)
23 3 22
select week(19980101),week(19970101),week(19980101,1),week(19970101,1);
week(19980101) week(19970101) week(19980101,1) week(19970101,1)
0 0 1 1
select week(19981231),week(19971231),week(19981231,1),week(19971231,1);
week(19981231) week(19971231) week(19981231,1) week(19971231,1)
52 52 53 53
select week(19950101),week(19950101,1);
week(19950101) week(19950101,1)
1 0
select yearweek('1981-12-31',1),yearweek('1982-01-01',1),yearweek('1982-12-31',1),yearweek('1983-01-01',1);
yearweek('1981-12-31',1) yearweek('1982-01-01',1) yearweek('1982-12-31',1) yearweek('1983-01-01',1)
198153 198153 198252 198252
select yearweek('1987-01-01',1),yearweek('1987-01-01');
yearweek('1987-01-01',1) yearweek('1987-01-01')
198701 198652
select week("2000-01-01",0) as '2000', week("2001-01-01",0) as '2001', week("2002-01-01",0) as '2002',week("2003-01-01",0) as '2003', week("2004-01-01",0) as '2004', week("2005-01-01",0) as '2005', week("2006-01-01",0) as '2006';
2000 2001 2002 2003 2004 2005 2006
0 0 0 0 0 0 1
select week("2000-01-06",0) as '2000', week("2001-01-06",0) as '2001', week("2002-01-06",0) as '2002',week("2003-01-06",0) as '2003', week("2004-01-06",0) as '2004', week("2005-01-06",0) as '2005', week("2006-01-06",0) as '2006';
2000 2001 2002 2003 2004 2005 2006
1 0 1 1 1 1 1
select week("2000-01-01",1) as '2000', week("2001-01-01",1) as '2001', week("2002-01-01",1) as '2002',week("2003-01-01",1) as '2003', week("2004-01-01",1) as '2004', week("2005-01-01",1) as '2005', week("2006-01-01",1) as '2006';
2000 2001 2002 2003 2004 2005 2006
0 1 1 1 1 0 0
select week("2000-01-06",1) as '2000', week("2001-01-06",1) as '2001', week("2002-01-06",1) as '2002',week("2003-01-06",1) as '2003', week("2004-01-06",1) as '2004', week("2005-01-06",1) as '2005', week("2006-01-06",1) as '2006';
2000 2001 2002 2003 2004 2005 2006
1 1 1 2 2 1 1
select yearweek("2000-01-01",0) as '2000', yearweek("2001-01-01",0) as '2001', yearweek("2002-01-01",0) as '2002',yearweek("2003-01-01",0) as '2003', yearweek("2004-01-01",0) as '2004', yearweek("2005-01-01",0) as '2005', yearweek("2006-01-01",0) as '2006';
2000 2001 2002 2003 2004 2005 2006
199952 200053 200152 200252 200352 200452 200601
select yearweek("2000-01-06",0) as '2000', yearweek("2001-01-06",0) as '2001', yearweek("2002-01-06",0) as '2002',yearweek("2003-01-06",0) as '2003', yearweek("2004-01-06",0) as '2004', yearweek("2005-01-06",0) as '2005', yearweek("2006-01-06",0) as '2006';
2000 2001 2002 2003 2004 2005 2006
200001 200053 200201 200301 200401 200501 200601
select yearweek("2000-01-01",1) as '2000', yearweek("2001-01-01",1) as '2001', yearweek("2002-01-01",1) as '2002',yearweek("2003-01-01",1) as '2003', yearweek("2004-01-01",1) as '2004', yearweek("2005-01-01",1) as '2005', yearweek("2006-01-01",1) as '2006';
2000 2001 2002 2003 2004 2005 2006
199952 200101 200201 200301 200401 200453 200552
select yearweek("2000-01-06",1) as '2000', yearweek("2001-01-06",1) as '2001', yearweek("2002-01-06",1) as '2002',yearweek("2003-01-06",1) as '2003', yearweek("2004-01-06",1) as '2004', yearweek("2005-01-06",1) as '2005', yearweek("2006-01-06",1) as '2006';
2000 2001 2002 2003 2004 2005 2006
200001 200101 200201 200302 200402 200501 200601
select date_format('1998-12-31','%x-%v'),date_format('1999-01-01','%x-%v');
date_format('1998-12-31','%x-%v') date_format('1999-01-01','%x-%v')
1998-53 1998-53
select date_format('1999-12-31','%x-%v'),date_format('2000-01-01','%x-%v');
date_format('1999-12-31','%x-%v') date_format('2000-01-01','%x-%v')
1999-52 1999-52
select dayname("1962-03-03"),dayname("1962-03-03")+0;
dayname("1962-03-03") dayname("1962-03-03")+0
Saturday 5
select monthname("1972-03-04"),monthname("1972-03-04")+0;
monthname("1972-03-04") monthname("1972-03-04")+0
March 3
select time_format(19980131000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
time_format(19980131000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
00|12|0|12|00|AM|12:00:00 AM|00|00:00:00
select time_format(19980131010203,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
time_format(19980131010203,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
01|01|1|1|02|AM|01:02:03 AM|03|01:02:03
select time_format(19980131131415,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
time_format(19980131131415,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
13|01|13|1|14|PM|01:14:15 PM|15|13:14:15
select time_format(19980131010015,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
time_format(19980131010015,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
01|01|1|1|00|AM|01:00:15 AM|15|01:00:15
select date_format(concat('19980131',131415),'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w');
date_format(concat('19980131',131415),'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w')
13|01|13|1|14|PM|01:14:15 PM|15|13:14:15| January|Saturday|31st|1998|98|Sat|Jan|031|01|31|01|15|6
select date_format(19980021000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w');
date_format(19980021000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w')
NULL
select date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND);
date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND)
1998-01-01 00:00:00
select date_add("1997-12-31 23:59:59",INTERVAL 1 MINUTE);
date_add("1997-12-31 23:59:59",INTERVAL 1 MINUTE)
1998-01-01 00:00:59
select date_add("1997-12-31 23:59:59",INTERVAL 1 HOUR);
date_add("1997-12-31 23:59:59",INTERVAL 1 HOUR)
1998-01-01 00:59:59
select date_add("1997-12-31 23:59:59",INTERVAL 1 DAY);
date_add("1997-12-31 23:59:59",INTERVAL 1 DAY)
1998-01-01 23:59:59
select date_add("1997-12-31 23:59:59",INTERVAL 1 MONTH);
date_add("1997-12-31 23:59:59",INTERVAL 1 MONTH)
1998-01-31 23:59:59
select date_add("1997-12-31 23:59:59",INTERVAL 1 YEAR);
date_add("1997-12-31 23:59:59",INTERVAL 1 YEAR)
1998-12-31 23:59:59
select date_add("1997-12-31 23:59:59",INTERVAL "1:1" MINUTE_SECOND);
date_add("1997-12-31 23:59:59",INTERVAL "1:1" MINUTE_SECOND)
1998-01-01 00:01:00
select date_add("1997-12-31 23:59:59",INTERVAL "1:1" HOUR_MINUTE);
date_add("1997-12-31 23:59:59",INTERVAL "1:1" HOUR_MINUTE)
1998-01-01 01:00:59
select date_add("1997-12-31 23:59:59",INTERVAL "1:1" DAY_HOUR);
date_add("1997-12-31 23:59:59",INTERVAL "1:1" DAY_HOUR)
1998-01-02 00:59:59
select date_add("1997-12-31 23:59:59",INTERVAL "1 1" YEAR_MONTH);
date_add("1997-12-31 23:59:59",INTERVAL "1 1" YEAR_MONTH)
1999-01-31 23:59:59
select date_add("1997-12-31 23:59:59",INTERVAL "1:1:1" HOUR_SECOND);
date_add("1997-12-31 23:59:59",INTERVAL "1:1:1" HOUR_SECOND)
1998-01-01 01:01:00
select date_add("1997-12-31 23:59:59",INTERVAL "1 1:1" DAY_MINUTE);
date_add("1997-12-31 23:59:59",INTERVAL "1 1:1" DAY_MINUTE)
1998-01-02 01:00:59
select date_add("1997-12-31 23:59:59",INTERVAL "1 1:1:1" DAY_SECOND);
date_add("1997-12-31 23:59:59",INTERVAL "1 1:1:1" DAY_SECOND)
1998-01-02 01:01:00
select date_sub("1998-01-01 00:00:00",INTERVAL 1 SECOND);
date_sub("1998-01-01 00:00:00",INTERVAL 1 SECOND)
1997-12-31 23:59:59
select date_sub("1998-01-01 00:00:00",INTERVAL 1 MINUTE);
date_sub("1998-01-01 00:00:00",INTERVAL 1 MINUTE)
1997-12-31 23:59:00
select date_sub("1998-01-01 00:00:00",INTERVAL 1 HOUR);
date_sub("1998-01-01 00:00:00",INTERVAL 1 HOUR)
1997-12-31 23:00:00
select date_sub("1998-01-01 00:00:00",INTERVAL 1 DAY);
date_sub("1998-01-01 00:00:00",INTERVAL 1 DAY)
1997-12-31 00:00:00
select date_sub("1998-01-01 00:00:00",INTERVAL 1 MONTH);
date_sub("1998-01-01 00:00:00",INTERVAL 1 MONTH)
1997-12-01 00:00:00
select date_sub("1998-01-01 00:00:00",INTERVAL 1 YEAR);
date_sub("1998-01-01 00:00:00",INTERVAL 1 YEAR)
1997-01-01 00:00:00
select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" MINUTE_SECOND);
date_sub("1998-01-01 00:00:00",INTERVAL "1:1" MINUTE_SECOND)
1997-12-31 23:58:59
select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" HOUR_MINUTE);
date_sub("1998-01-01 00:00:00",INTERVAL "1:1" HOUR_MINUTE)
1997-12-31 22:59:00
select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" DAY_HOUR);
date_sub("1998-01-01 00:00:00",INTERVAL "1:1" DAY_HOUR)
1997-12-30 23:00:00
select date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH);
date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH)
1996-12-01 00:00:00
select date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND);
date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND)
1997-12-31 22:58:59
select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE);
date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE)
1997-12-30 22:59:00
select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND);
date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND)
1997-12-30 22:58:59
select date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND);
date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND)
1998-01-02 03:46:39
select date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE);
date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE)
1997-10-23 13:19:59
select date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR);
date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR)
2009-05-29 15:59:59
select date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY);
date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY)
1724-03-17 23:59:59
select date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH);
date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH)
NULL
select date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR);
date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR)
NULL
select date_add("1997-12-31 23:59:59",INTERVAL "10000:1" MINUTE_SECOND);
date_add("1997-12-31 23:59:59",INTERVAL "10000:1" MINUTE_SECOND)
1998-01-07 22:40:00
select date_add("1997-12-31 23:59:59",INTERVAL "-10000:1" HOUR_MINUTE);
date_add("1997-12-31 23:59:59",INTERVAL "-10000:1" HOUR_MINUTE)
1996-11-10 07:58:59
select date_add("1997-12-31 23:59:59",INTERVAL "10000:1" DAY_HOUR);
date_add("1997-12-31 23:59:59",INTERVAL "10000:1" DAY_HOUR)
2025-05-19 00:59:59
select date_add("1997-12-31 23:59:59",INTERVAL "-100 1" YEAR_MONTH);
date_add("1997-12-31 23:59:59",INTERVAL "-100 1" YEAR_MONTH)
1897-11-30 23:59:59
select date_add("1997-12-31 23:59:59",INTERVAL "10000:99:99" HOUR_SECOND);
date_add("1997-12-31 23:59:59",INTERVAL "10000:99:99" HOUR_SECOND)
1999-02-21 17:40:38
select date_add("1997-12-31 23:59:59",INTERVAL " -10000 99:99" DAY_MINUTE);
date_add("1997-12-31 23:59:59",INTERVAL " -10000 99:99" DAY_MINUTE)
1970-08-11 19:20:59
select date_add("1997-12-31 23:59:59",INTERVAL "10000 99:99:99" DAY_SECOND);
date_add("1997-12-31 23:59:59",INTERVAL "10000 99:99:99" DAY_SECOND)
2025-05-23 04:40:38
select "1997-12-31 23:59:59" + INTERVAL 1 SECOND;
"1997-12-31 23:59:59" + INTERVAL 1 SECOND
1998-01-01 00:00:00
select INTERVAL 1 DAY + "1997-12-31";
INTERVAL 1 DAY + "1997-12-31"
1998-01-01
select "1998-01-01 00:00:00" - INTERVAL 1 SECOND;
"1998-01-01 00:00:00" - INTERVAL 1 SECOND
1997-12-31 23:59:59
select date_sub("1998-01-02",INTERVAL 31 DAY);
date_sub("1998-01-02",INTERVAL 31 DAY)
1997-12-02
select date_add("1997-12-31",INTERVAL 1 SECOND);
date_add("1997-12-31",INTERVAL 1 SECOND)
1997-12-31 00:00:01
select date_add("1997-12-31",INTERVAL 1 DAY);
date_add("1997-12-31",INTERVAL 1 DAY)
1998-01-01
select date_add(NULL,INTERVAL 100000 SECOND);
date_add(NULL,INTERVAL 100000 SECOND)
NULL
select date_add("1997-12-31 23:59:59",INTERVAL NULL SECOND);
date_add("1997-12-31 23:59:59",INTERVAL NULL SECOND)
NULL
select date_add("1997-12-31 23:59:59",INTERVAL NULL MINUTE_SECOND);
date_add("1997-12-31 23:59:59",INTERVAL NULL MINUTE_SECOND)
NULL
select date_add("9999-12-31 23:59:59",INTERVAL 1 SECOND);
date_add("9999-12-31 23:59:59",INTERVAL 1 SECOND)
NULL
select date_sub("0000-00-00 00:00:00",INTERVAL 1 SECOND);
date_sub("0000-00-00 00:00:00",INTERVAL 1 SECOND)
NULL
select date_add('1998-01-30',Interval 1 month);
date_add('1998-01-30',Interval 1 month)
1998-02-28
select date_add('1998-01-30',Interval '2:1' year_month);
date_add('1998-01-30',Interval '2:1' year_month)
2000-02-29
select date_add('1996-02-29',Interval '1' year);
date_add('1996-02-29',Interval '1' year)
1997-02-28
select extract(YEAR FROM "1999-01-02 10:11:12");
extract(YEAR FROM "1999-01-02 10:11:12")
1999
select extract(YEAR_MONTH FROM "1999-01-02");
extract(YEAR_MONTH FROM "1999-01-02")
199901
select extract(DAY FROM "1999-01-02");
extract(DAY FROM "1999-01-02")
2
select extract(DAY_HOUR FROM "1999-01-02 10:11:12");
extract(DAY_HOUR FROM "1999-01-02 10:11:12")
210
select extract(DAY_MINUTE FROM "02 10:11:12");
extract(DAY_MINUTE FROM "02 10:11:12")
21011
select extract(DAY_SECOND FROM "225 10:11:12");
extract(DAY_SECOND FROM "225 10:11:12")
225101112
select extract(HOUR FROM "1999-01-02 10:11:12");
extract(HOUR FROM "1999-01-02 10:11:12")
10
select extract(HOUR_MINUTE FROM "10:11:12");
extract(HOUR_MINUTE FROM "10:11:12")
1011
select extract(HOUR_SECOND FROM "10:11:12");
extract(HOUR_SECOND FROM "10:11:12")
101112
select extract(MINUTE FROM "10:11:12");
extract(MINUTE FROM "10:11:12")
11
select extract(MINUTE_SECOND FROM "10:11:12");
extract(MINUTE_SECOND FROM "10:11:12")
1112
select extract(SECOND FROM "1999-01-02 10:11:12");
extract(SECOND FROM "1999-01-02 10:11:12")
12
select extract(MONTH FROM "2001-02-00");
extract(MONTH FROM "2001-02-00")
2
create table t1 (ctime varchar(20));
insert into t1 values ('2001-01-12 12:23:40');
select ctime, hour(ctime) from t1;
ctime hour(ctime)
2001-01-12 12:23:40 12
drop table t1;
create table t1 (id int);
create table t2 (id int, date date);
insert into t1 values (1);
insert into t2 values (1, "0000-00-00");
insert into t1 values (2);
insert into t2 values (2, "2000-01-01");
select monthname(date) from t1 inner join t2 on t1.id = t2.id;
monthname(date)
NULL
January
select monthname(date) from t1 inner join t2 on t1.id = t2.id order by t1.id;
monthname(date)
NULL
January
drop table t1,t2;
CREATE TABLE t1 (updated text) TYPE=MyISAM;
INSERT INTO t1 VALUES ('');
SELECT month(updated) from t1;
month(updated)
NULL
SELECT year(updated) from t1;
year(updated)
NULL
drop table t1;

View File

@ -1,3 +1,11 @@
drop table if exists t1;
create table t1 (Zeit time, Tag tinyint not null, Monat tinyint not null,
Jahr smallint not null, index(Tag), index(Monat), index(Jahr) );
insert into t1 values ("09:26:00",16,9,1998),("09:26:00",16,9,1998);
SELECT CONCAT(Jahr,'-',Monat,'-',Tag,' ',Zeit) AS Date,
UNIX_TIMESTAMP(CONCAT(Jahr,'-',Monat,'-',Tag,' ',Zeit)) AS Unix
FROM t1;
Date Unix
1998-9-16 09:26:00 905927160
1998-9-16 09:26:00 905927160
drop table t1;

View File

@ -1,15 +1,189 @@
drop table if exists t1,t2;
CREATE TABLE t1 (
spID int(10) unsigned,
userID int(10) unsigned,
score smallint(5) unsigned,
lsg char(40),
date date
);
INSERT INTO t1 VALUES (1,1,1,'','0000-00-00');
INSERT INTO t1 VALUES (2,2,2,'','0000-00-00');
INSERT INTO t1 VALUES (2,1,1,'','0000-00-00');
INSERT INTO t1 VALUES (3,3,3,'','0000-00-00');
CREATE TABLE t2 (
userID int(10) unsigned DEFAULT '0' NOT NULL auto_increment,
niName char(15),
passwd char(8),
mail char(50),
isAukt enum('N','Y') DEFAULT 'N',
vName char(30),
nName char(40),
adr char(60),
plz char(5),
ort char(35),
land char(20),
PRIMARY KEY (userID)
);
INSERT INTO t2 VALUES (1,'name','pass','mail','Y','v','n','adr','1','1','1');
INSERT INTO t2 VALUES (2,'name','pass','mail','Y','v','n','adr','1','1','1');
INSERT INTO t2 VALUES (3,'name','pass','mail','Y','v','n','adr','1','1','1');
SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID GROUP BY t2.userid;
userid MIN(t1.score)
1 1
2 2
3 3
SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2 GROUP BY t2.userid;
userid MIN(t1.score)
1 1
2 2
SELECT t2.userid, MIN(t1.score+0.0) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2 GROUP BY t2.userid;
userid MIN(t1.score+0.0)
1 1.0
2 2.0
drop table test.t1,test.t2;
CREATE TABLE t1 (
PID int(10) unsigned DEFAULT '0' NOT NULL auto_increment,
payDate date DEFAULT '0000-00-00' NOT NULL,
recDate datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
URID int(10) unsigned DEFAULT '0' NOT NULL,
CRID int(10) unsigned DEFAULT '0' NOT NULL,
amount int(10) unsigned DEFAULT '0' NOT NULL,
operator int(10) unsigned,
method enum('unknown','cash','dealer','check','card','lazy','delayed','test') DEFAULT 'unknown' NOT NULL,
DIID int(10) unsigned,
reason char(1) binary DEFAULT '' NOT NULL,
code_id int(10) unsigned,
qty mediumint(8) unsigned DEFAULT '0' NOT NULL,
PRIMARY KEY (PID),
KEY URID (URID),
KEY reason (reason),
KEY method (method),
KEY payDate (payDate)
);
INSERT INTO t1 VALUES (1,'1970-01-01','1997-10-17 00:00:00',2529,1,21000,11886,'check',0,'F',16200,6);
SELECT COUNT(P.URID),SUM(P.amount),P.method, MIN(PP.recdate+0) > 19980501000000 AS IsNew FROM t1 AS P JOIN t1 as PP WHERE P.URID = PP.URID GROUP BY method,IsNew;
Can't group on 'IsNew'
drop table t1;
CREATE TABLE t1 (
cid mediumint(9) DEFAULT '0' NOT NULL auto_increment,
firstname varchar(32) DEFAULT '' NOT NULL,
surname varchar(32) DEFAULT '' NOT NULL,
PRIMARY KEY (cid)
);
INSERT INTO t1 VALUES (1,'That','Guy');
INSERT INTO t1 VALUES (2,'Another','Gent');
CREATE TABLE t2 (
call_id mediumint(8) DEFAULT '0' NOT NULL auto_increment,
contact_id mediumint(8) DEFAULT '0' NOT NULL,
PRIMARY KEY (call_id),
KEY contact_id (contact_id)
);
lock tables t1 read,t2 write;
INSERT INTO t2 VALUES (10,2);
INSERT INTO t2 VALUES (18,2);
INSERT INTO t2 VALUES (62,2);
INSERT INTO t2 VALUES (91,2);
INSERT INTO t2 VALUES (92,2);
SELECT cid, CONCAT(firstname, ' ', surname), COUNT(call_id) FROM t1 LEFT JOIN t2 ON cid=contact_id WHERE firstname like '%foo%' GROUP BY cid;
cid CONCAT(firstname, ' ', surname) COUNT(call_id)
SELECT HIGH_PRIORITY cid, CONCAT(firstname, ' ', surname), COUNT(call_id) FROM t1 LEFT JOIN t2 ON cid=contact_id WHERE firstname like '%foo%' GROUP BY cid ORDER BY surname, firstname;
cid CONCAT(firstname, ' ', surname) COUNT(call_id)
drop table t1,t2;
unlock tables;
CREATE TABLE t1 (
bug_id mediumint(9) DEFAULT '0' NOT NULL auto_increment,
groupset bigint(20) DEFAULT '0' NOT NULL,
assigned_to mediumint(9) DEFAULT '0' NOT NULL,
bug_file_loc text,
bug_severity enum('blocker','critical','major','normal','minor','trivial','enhancement') DEFAULT 'blocker' NOT NULL,
bug_status enum('NEW','ASSIGNED','REOPENED','RESOLVED','VERIFIED','CLOSED') DEFAULT 'NEW' NOT NULL,
creation_ts datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
delta_ts timestamp(14),
short_desc mediumtext,
long_desc mediumtext,
op_sys enum('All','Windows 3.1','Windows 95','Windows 98','Windows NT','Windows 2000','Linux','other') DEFAULT 'All' NOT NULL,
priority enum('P1','P2','P3','P4','P5') DEFAULT 'P1' NOT NULL,
product varchar(64) DEFAULT '' NOT NULL,
rep_platform enum('All','PC','VTD-8','Other'),
reporter mediumint(9) DEFAULT '0' NOT NULL,
version varchar(16) DEFAULT '' NOT NULL,
component varchar(50) DEFAULT '' NOT NULL,
resolution enum('','FIXED','INVALID','WONTFIX','LATER','REMIND','DUPLICATE','WORKSFORME') DEFAULT '' NOT NULL,
target_milestone varchar(20) DEFAULT '' NOT NULL,
qa_contact mediumint(9) DEFAULT '0' NOT NULL,
status_whiteboard mediumtext NOT NULL,
votes mediumint(9) DEFAULT '0' NOT NULL,
PRIMARY KEY (bug_id),
KEY assigned_to (assigned_to),
KEY creation_ts (creation_ts),
KEY delta_ts (delta_ts),
KEY bug_severity (bug_severity),
KEY bug_status (bug_status),
KEY op_sys (op_sys),
KEY priority (priority),
KEY product (product),
KEY reporter (reporter),
KEY version (version),
KEY component (component),
KEY resolution (resolution),
KEY target_milestone (target_milestone),
KEY qa_contact (qa_contact),
KEY votes (votes)
);
INSERT INTO t1 VALUES (1,0,0,'','normal','','2000-02-10 09:25:12',20000321114747,'','','Linux','P1','TestProduct','PC',3,'other','TestComponent','','M1',0,'',0);
INSERT INTO t1 VALUES (9,0,0,'','enhancement','','2000-03-10 11:49:36',20000321114747,'','','All','P5','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - conversion','','',0,'',0);
INSERT INTO t1 VALUES (10,0,0,'','enhancement','','2000-03-10 18:10:16',20000321114747,'','','All','P4','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - conversion','','',0,'',0);
INSERT INTO t1 VALUES (7,0,0,'','critical','','2000-03-09 10:50:21',20000321114747,'','','All','P1','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - generic','','',0,'',0);
INSERT INTO t1 VALUES (6,0,0,'','normal','','2000-03-09 10:42:44',20000321114747,'','','All','P2','AAAAA','PC',3,'2.00 CD - Pre','kkkkkkkkkkk lllllllllll','','',0,'',0);
INSERT INTO t1 VALUES (8,0,0,'','major','','2000-03-09 11:32:14',20000321114747,'','','All','P3','AAAAA','PC',3,'2.00 CD - Pre','kkkkkkkkkkk lllllllllll','','',0,'',0);
INSERT INTO t1 VALUES (5,0,0,'','enhancement','','2000-03-09 10:38:59',20000321114747,'','','All','P5','CCC/CCCCCC','PC',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (4,0,0,'','normal','','2000-03-08 18:32:14',20000321114747,'','','other','P2','TestProduct','Other',3,'other','TestComponent2','','',0,'',0);
INSERT INTO t1 VALUES (3,0,0,'','normal','','2000-03-08 18:30:52',20000321114747,'','','other','P2','TestProduct','Other',3,'other','TestComponent','','',0,'',0);
INSERT INTO t1 VALUES (2,0,0,'','enhancement','','2000-03-08 18:24:51',20000321114747,'','','All','P2','TestProduct','Other',4,'other','TestComponent2','','',0,'',0);
INSERT INTO t1 VALUES (11,0,0,'','blocker','','2000-03-13 09:43:41',20000321114747,'','','All','P2','CCC/CCCCCC','PC',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (12,0,0,'','normal','','2000-03-13 16:14:31',20000321114747,'','','All','P2','AAAAA','PC',3,'2.00 CD - Pre','kkkkkkkkkkk lllllllllll','','',0,'',0);
INSERT INTO t1 VALUES (13,0,0,'','normal','','2000-03-15 16:20:44',20000321114747,'','','other','P2','TestProduct','Other',3,'other','TestComponent','','',0,'',0);
INSERT INTO t1 VALUES (14,0,0,'','blocker','','2000-03-15 18:13:47',20000321114747,'','','All','P1','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - generic','','',0,'',0);
INSERT INTO t1 VALUES (15,0,0,'','minor','','2000-03-16 18:03:28',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (16,0,0,'','normal','','2000-03-16 18:33:41',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (17,0,0,'','normal','','2000-03-16 18:34:18',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (18,0,0,'','normal','','2000-03-16 18:34:56',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (19,0,0,'','enhancement','','2000-03-16 18:35:34',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (20,0,0,'','enhancement','','2000-03-16 18:36:23',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (21,0,0,'','enhancement','','2000-03-16 18:37:23',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (22,0,0,'','enhancement','','2000-03-16 18:38:16',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (23,0,0,'','normal','','2000-03-16 18:58:12',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (24,0,0,'','normal','','2000-03-17 11:08:10',20000321114747,'','','All','P2','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
INSERT INTO t1 VALUES (25,0,0,'','normal','','2000-03-17 11:10:45',20000321114747,'','','All','P2','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
INSERT INTO t1 VALUES (26,0,0,'','normal','','2000-03-17 11:15:47',20000321114747,'','','All','P2','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
INSERT INTO t1 VALUES (27,0,0,'','normal','','2000-03-17 17:45:41',20000321114747,'','','All','P2','CCC/CCCCCC','PC',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (28,0,0,'','normal','','2000-03-20 09:51:45',20000321114747,'','','Windows NT','P2','TestProduct','PC',8,'other','TestComponent','','',0,'',0);
INSERT INTO t1 VALUES (29,0,0,'','normal','','2000-03-20 11:15:09',20000321114747,'','','All','P5','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
CREATE TABLE t2 (
value tinytext,
program varchar(64),
initialowner tinytext NOT NULL,
initialqacontact tinytext NOT NULL,
description mediumtext NOT NULL
);
INSERT INTO t2 VALUES ('TestComponent','TestProduct','id0001','','');
INSERT INTO t2 VALUES ('BBBBBBBBBBBBB - conversion','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('BBBBBBBBBBBBB - generic','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('TestComponent2','TestProduct','id0001','','');
INSERT INTO t2 VALUES ('BBBBBBBBBBBBB - eeeeeeeee','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('kkkkkkkkkkk lllllllllll','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('Test Procedures','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('Documentation','AAAAA','id0003','','');
INSERT INTO t2 VALUES ('DDDDDDDDD','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Eeeeeeee Lite','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Eeeeeeee Full','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Administration','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Distribution','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Setup','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Unspecified','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Web Interface','AAAAAAAA-AAA','id0001','','');
INSERT INTO t2 VALUES ('Host communication','AAAAA','id0001','','');
select value,description,bug_id from t2 left join t1 on t2.program=t1.product and t2.value=t1.component where program="AAAAA";
value description bug_id
BBBBBBBBBBBBB - conversion 9
BBBBBBBBBBBBB - conversion 10
@ -22,6 +196,7 @@ kkkkkkkkkkk lllllllllll 12
Test Procedures NULL
Documentation NULL
Host communication NULL
select value,description,COUNT(bug_id) from t2 left join t1 on t2.program=t1.product and t2.value=t1.component where program="AAAAA" group by value;
value description COUNT(bug_id)
BBBBBBBBBBBBB - conversion 2
BBBBBBBBBBBBB - eeeeeeeee 0
@ -30,7 +205,14 @@ Documentation 0
Host communication 0
kkkkkkkkkkk lllllllllll 3
Test Procedures 0
drop table t1,t2;
create table t1 (foo int);
insert into t1 values (1);
select 1+1, "a",count(*) from t1 where foo in (2);
1+1 a count(*)
2 a 0
insert into t1 values (1);
select 1+1,"a",count(*) from t1 where foo in (2);
1+1 a count(*)
2 a 0
drop table t1;

View File

@ -1,60 +1,99 @@
drop table if exists t1;
create table t1 (a int, b char(10), key a(a), key b(a,b));
insert into t1 values
(17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
(14,"aaa"),(15,"bbb"),(16,"ccc"),(16,"xxx"),
(20,"ggg"),(21,"hhh"),(22,"iii");
handler t1 open as t2;
handler t2 read a first;
a b
14 aaa
handler t2 read a next;
a b
15 bbb
handler t2 read a next;
a b
16 ccc
handler t2 read a prev;
a b
15 bbb
handler t2 read a last;
a b
22 iii
handler t2 read a prev;
a b
21 hhh
handler t2 read a prev;
a b
20 ggg
handler t2 read a first;
a b
14 aaa
handler t2 read a prev;
a b
handler t2 read a last;
a b
22 iii
handler t2 read a prev;
a b
21 hhh
handler t2 read a next;
a b
22 iii
handler t2 read a next;
a b
handler t2 read a=(15);
a b
15 bbb
handler t2 read a=(16);
a b
16 ccc
handler t2 read a=(19,"fff");
Too many key parts specified. Max 1 parts allowed
handler t2 read b=(19,"fff");
a b
19 fff
handler t2 read b=(19,"yyy");
a b
19 yyy
handler t2 read b=(19);
a b
19 fff
handler t1 read a last;
Unknown table 't1' in HANDLER
handler t2 read a=(11);
a b
handler t2 read a>=(11);
a b
14 aaa
handler t2 read a=(18);
a b
18 eee
handler t2 read a>=(18);
a b
18 eee
handler t2 read a>(18);
a b
19 fff
handler t2 read a<=(18);
a b
18 eee
handler t2 read a<(18);
a b
17 ddd
handler t2 read a first limit 5;
a b
14 aaa
15 bbb
16 ccc
16 xxx
17 ddd
handler t2 read a next limit 3;
a b
18 eee
19 fff
19 yyy
handler t2 read a prev limit 10;
a b
19 fff
18 eee
@ -63,25 +102,37 @@ a b
16 ccc
15 bbb
14 aaa
handler t2 read a>=(16) limit 4;
a b
16 ccc
16 xxx
17 ddd
18 eee
handler t2 read a>=(16) limit 2,2;
a b
17 ddd
18 eee
handler t2 read a last limit 3;
a b
22 iii
21 hhh
20 ggg
handler t2 read a=(19);
a b
19 fff
handler t2 read a=(19) where b="yyy";
a b
19 yyy
handler t2 read first;
a b
17 ddd
handler t2 read next;
a b
18 eee
handler t2 read next;
a b
19 fff
handler t2 read last;
You have an error in your SQL syntax near '' at line 1
handler t2 close;
drop table if exists t1;

View File

@ -1,4 +1,11 @@
drop table if exists t1;
create table t1 (a int);
select count(a) as b from t1 where a=0 having b > 0;
b
insert into t1 values (null);
select count(a) as b from t1 where a=0 having b > 0;
b
select count(a) as b from t1 where a=0 having b >=0;
b
0
drop table t1;

View File

@ -1,41 +1,75 @@
drop table if exists t1;
create table t1 (a int not null,b int not null, primary key (a)) type=heap comment="testing heaps" avg_row_length=100 min_rows=1 max_rows=100;
insert into t1 values(1,1),(2,2),(3,3),(4,4);
delete from t1 where a=1 or a=0;
show keys from t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Comment
t1 0 PRIMARY 1 a NULL NULL NULL NULL
select * from t1;
a b
2 2
3 3
4 4
select * from t1 where a=4;
a b
4 4
update t1 set b=5 where a=4;
update t1 set b=b+1 where a>=3;
replace t1 values (3,3);
select * from t1;
a b
2 2
3 3
4 6
alter table t1 add c int not null, add key (c,a);
drop table t1;
create table t1 (a int not null,b int not null, primary key (a)) type=heap comment="testing heaps";
insert into t1 values(1,1),(2,2),(3,3),(4,4);
alter table t1 modify a int not null auto_increment, type=myisam, comment="new myisam table";
select * from t1;
a b
1 1
2 2
3 3
4 4
drop table t1;
create table t1 (a int not null) type=heap;
insert into t1 values (869751),(736494),(226312),(802616);
select * from t1 where a > 736494;
a
869751
802616
alter table t1 add unique uniq_id(a);
select * from t1 where a > 736494;
a
869751
802616
select * from t1 where a = 736494;
a
736494
select * from t1 where a=869751 or a=736494;
a
736494
869751
select * from t1 where a in (869751,736494,226312,802616);
a
226312
736494
802616
869751
alter table t1 type=myisam;
explain select * from t1 where a in (869751,736494,226312,802616);
table type possible_keys key key_len ref rows Extra
t1 range uniq_id uniq_id 4 NULL 4 where used; Using index
drop table t1;
create table t1 (x int not null, y int not null, key x(x), unique y(y))
type=heap;
insert into t1 values (1,1),(2,2),(1,3),(2,4),(2,5),(2,6);
select * from t1 where x=1;
x y
1 3
1 1
select * from t1,t1 as t2 where t1.x=t2.y;
x y x y
1 1 1 1
2 2 2 2
@ -43,11 +77,20 @@ x y x y
2 4 2 2
2 5 2 2
2 6 2 2
explain select * from t1,t1 as t2 where t1.x=t2.y;
table type possible_keys key key_len ref rows Extra
t1 ALL x NULL NULL NULL 6
t2 eq_ref y y 4 t1.x 1
drop table t1;
create table t1 (a int) type=heap;
insert into t1 values(1);
select max(a) from t1;
max(a)
1
drop table t1;
CREATE TABLE t1 ( a int not null default 0, b int not null default 0, key(a), key(b) ) TYPE=HEAP;
insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
select * from t1 where a=1;
a b
1 6
1 5
@ -55,6 +98,8 @@ a b
1 3
1 2
1 1
insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
select * from t1 where a=1;
a b
1 6
1 5
@ -68,20 +113,55 @@ a b
1 3
1 2
1 1
drop table t1;
create table t1 (id int unsigned not null, primary key (id)) type=HEAP;
insert into t1 values(1);
select max(id) from t1;
max(id)
1
insert into t1 values(2);
select max(id) from t1;
max(id)
2
replace into t1 values(1);
drop table t1;
create table t1 (n int) type=heap;
drop table t1;
create table t1 (n int) type=heap;
drop table if exists t1;
CREATE table t1(f1 int not null,f2 char(20) not
null,index(f2)) type=heap;
INSERT into t1 set f1=12,f2="bill";
INSERT into t1 set f1=13,f2="bill";
INSERT into t1 set f1=14,f2="bill";
INSERT into t1 set f1=15,f2="bill";
INSERT into t1 set f1=16,f2="ted";
INSERT into t1 set f1=12,f2="ted";
INSERT into t1 set f1=12,f2="ted";
INSERT into t1 set f1=12,f2="ted";
INSERT into t1 set f1=12,f2="ted";
delete from t1 where f2="bill";
select * from t1;
f1 f2
16 ted
12 ted
12 ted
12 ted
12 ted
drop table t1;
create table t1 (btn char(10) not null, key(btn)) type=heap;
insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
explain select * from t1 where btn like "q%";
table type possible_keys key key_len ref rows Extra
t1 ALL btn NULL NULL NULL 14 where used
select * from t1 where btn like "q%";
btn
alter table t1 add column new_col char(1) not null, add key (btn,new_col), drop key btn;
update t1 set new_col=btn;
explain select * from t1 where btn="a";
table type possible_keys key key_len ref rows Extra
t1 ALL btn NULL NULL NULL 14 where used
explain select * from t1 where btn="a" and new_col="a";
table type possible_keys key key_len ref rows Extra
t1 ref btn btn 11 const,const 10 where used
drop table t1;

View File

@ -1,4 +1,6 @@
select last_insert_id(345);
last_insert_id(345)
345
select @@IDENTITY,last_insert_id();
@@IDENTITY last_insert_id()
345 345

View File

@ -1,3 +1,12 @@
use test;
drop table if exists t1,t2;
create table t1 (email varchar(50));
insert into t1 values ('sasha@mysql.com'),('monty@mysql.com'),
('foo@hotmail.com'),('foo@aol.com'),('bar@aol.com');
create table t2(id int not null auto_increment primary key,
t2 varchar(50), unique(t2));
insert into t2 (t2) select distinct substring(email, locate('@', email)+1) from t1;
select * from t2;
id t2
1 mysql.com
2 hotmail.com

View File

@ -1,6 +1,21 @@
drop table if exists t1;
create table t1 (a int not null);
insert into t1 values (1);
insert into t1 values (a+2);
insert into t1 values (a+3);
insert into t1 values (4),(a+5);
select * from t1;
a
1
2
3
4
5
drop table t1;
create table t1 (id int not null auto_increment primary key, username varchar(32) not null, unique (username));
insert into t1 values (0,"mysql");
insert into t1 values (0,"mysql ab");
insert into t1 values (0,"mysql a");
insert into t1 values (0,"r1manic");
insert into t1 values (0,"r1man");
drop table t1;

View File

@ -1,3 +1,10 @@
drop table if exists t1,t2;
create table t1 (bandID MEDIUMINT UNSIGNED NOT NULL PRIMARY KEY, payoutID SMALLINT UNSIGNED NOT NULL);
insert into t1 (bandID,payoutID) VALUES (1,6),(2,6),(3,4),(4,9),(5,10),(6,1),(7,12),(8,12);
create table t2 (payoutID SMALLINT UNSIGNED NOT NULL PRIMARY KEY);
insert into t2 (payoutID) SELECT DISTINCT payoutID FROM t1;
insert into t2 (payoutID) SELECT payoutID+10 FROM t1;
select * from t2;
payoutID
1
4
@ -11,5 +18,49 @@ payoutID
19
20
22
drop table t1,t2;
DROP TABLE IF EXISTS crash1,crash2;
CREATE TABLE `crash1` (
`numeropost` bigint(20) unsigned NOT NULL default '0',
`icone` tinyint(4) unsigned NOT NULL default '0',
`numreponse` bigint(20) unsigned NOT NULL auto_increment,
`contenu` text NOT NULL,
`pseudo` varchar(50) NOT NULL default '',
`date` datetime NOT NULL default '0000-00-00 00:00:00',
`ip` bigint(11) NOT NULL default '0',
`signature` tinyint(1) unsigned NOT NULL default '0',
PRIMARY KEY (`numeropost`,`numreponse`)
,KEY `ip` (`ip`),
KEY `date` (`date`),
KEY `pseudo` (`pseudo`),
KEY `numreponse` (`numreponse`)
) TYPE=MyISAM;
CREATE TABLE `crash2` (
`numeropost` bigint(20) unsigned NOT NULL default '0',
`icone` tinyint(4) unsigned NOT NULL default '0',
`numreponse` bigint(20) unsigned NOT NULL auto_increment,
`contenu` text NOT NULL,
`pseudo` varchar(50) NOT NULL default '',
`date` datetime NOT NULL default '0000-00-00 00:00:00',
`ip` bigint(11) NOT NULL default '0',
`signature` tinyint(1) unsigned NOT NULL default '0',
PRIMARY KEY (`numeropost`,`numreponse`),
KEY `ip` (`ip`),
KEY `date` (`date`),
KEY `pseudo` (`pseudo`),
KEY `numreponse` (`numreponse`)
) TYPE=MyISAM;
INSERT INTO crash2
(numeropost,icone,numreponse,contenu,pseudo,date,ip,signature) VALUES
(9,1,56,'test','joce','2001-07-25 13:50:53'
,3649052399,0);
INSERT INTO crash1 (numeropost,icone,contenu,pseudo,date,signature,ip)
SELECT 1618,icone,contenu,pseudo,date,signature,ip FROM crash2
WHERE numeropost=9 ORDER BY numreponse ASC;
show variables like '%bulk%';
Variable_name Value
myisam_bulk_insert_tree_size 8388608
INSERT INTO crash1 (numeropost,icone,contenu,pseudo,date,signature,ip)
SELECT 1718,icone,contenu,pseudo,date,signature,ip FROM crash2
WHERE numeropost=9 ORDER BY numreponse ASC;
DROP TABLE IF EXISTS crash1,crash2;

View File

@ -1,10 +1,18 @@
create table t1 (a tinyint not null auto_increment, b blob not null, primary key (a));
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
repair table t1;
Table Op Msg_type Msg_text
test.t1 repair status OK
delete from t1 where (a & 1);
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
repair table t1;
Table Op Msg_type Msg_text
test.t1 repair status OK
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;

View File

@ -1,22 +1,93 @@
drop table if exists t1,t2;
create table t1 (id int primary key);
create table t2 (id int);
insert into t1 values (75);
insert into t1 values (79);
insert into t1 values (78);
insert into t1 values (77);
replace into t1 values (76);
replace into t1 values (76);
insert into t1 values (104);
insert into t1 values (103);
insert into t1 values (102);
insert into t1 values (101);
insert into t1 values (105);
insert into t1 values (106);
insert into t1 values (107);
insert into t2 values (107);
insert into t2 values (75);
select t1.id, t2.id from t1, t2 where t2.id = t1.id;
id id
107 107
75 75
select t1.id, count(t2.id) from t1,t2 where t2.id = t1.id group by t1.id;
id count(t2.id)
75 1
107 1
select t1.id, count(t2.id) from t1,t2 where t2.id = t1.id group by t2.id;
id count(t2.id)
75 1
107 1
drop table t1,t2;
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
token varchar(100) DEFAULT '' NOT NULL,
count int(11) DEFAULT '0' NOT NULL,
qty int(11),
phone char(1) DEFAULT '' NOT NULL,
timestamp datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
PRIMARY KEY (id),
KEY token (token(15)),
KEY timestamp (timestamp),
UNIQUE token_2 (token(75),count,phone)
);
INSERT INTO t1 VALUES (21,'e45703b64de71482360de8fec94c3ade',3,7800,'n','1999-12-23 17:22:21');
INSERT INTO t1 VALUES (22,'e45703b64de71482360de8fec94c3ade',4,5000,'y','1999-12-23 17:22:21');
INSERT INTO t1 VALUES (18,'346d1cb63c89285b2351f0ca4de40eda',3,13200,'b','1999-12-23 11:58:04');
INSERT INTO t1 VALUES (17,'ca6ddeb689e1b48a04146b1b5b6f936a',4,15000,'b','1999-12-23 11:36:53');
INSERT INTO t1 VALUES (16,'ca6ddeb689e1b48a04146b1b5b6f936a',3,13200,'b','1999-12-23 11:36:53');
INSERT INTO t1 VALUES (26,'a71250b7ed780f6ef3185bfffe027983',5,1500,'b','1999-12-27 09:44:24');
INSERT INTO t1 VALUES (24,'4d75906f3c37ecff478a1eb56637aa09',3,5400,'y','1999-12-23 17:29:12');
INSERT INTO t1 VALUES (25,'4d75906f3c37ecff478a1eb56637aa09',4,6500,'y','1999-12-23 17:29:12');
INSERT INTO t1 VALUES (27,'a71250b7ed780f6ef3185bfffe027983',3,6200,'b','1999-12-27 09:44:24');
INSERT INTO t1 VALUES (28,'a71250b7ed780f6ef3185bfffe027983',3,5400,'y','1999-12-27 09:44:36');
INSERT INTO t1 VALUES (29,'a71250b7ed780f6ef3185bfffe027983',4,17700,'b','1999-12-27 09:45:05');
CREATE TABLE t2 (
id int(11) NOT NULL auto_increment,
category int(11) DEFAULT '0' NOT NULL,
county int(11) DEFAULT '0' NOT NULL,
state int(11) DEFAULT '0' NOT NULL,
phones int(11) DEFAULT '0' NOT NULL,
nophones int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (id),
KEY category (category,county,state)
);
INSERT INTO t2 VALUES (3,2,11,12,5400,7800);
INSERT INTO t2 VALUES (4,2,25,12,6500,11200);
INSERT INTO t2 VALUES (5,1,37,6,10000,12000);
select a.id, b.category as catid, b.state as stateid, b.county as
countyid from t1 a, t2 b where (a.token =
'a71250b7ed780f6ef3185bfffe027983') and (a.count = b.id);
id catid stateid countyid
27 2 12 11
28 2 12 11
29 2 12 25
26 1 6 37
select a.id, b.category as catid, b.state as stateid, b.county as
countyid from t1 a, t2 b where (a.token =
'a71250b7ed780f6ef3185bfffe027983') and (a.count = b.id) order by a.id;
id catid stateid countyid
26 1 6 37
27 2 12 11
28 2 12 11
29 2 12 25
drop table t1, t2;
create table t1 (a int primary key);
insert into t1 values(1),(2);
select t1.a from t1 as t1 left join t1 as t2 using (a) left join t1 as t3 using (a) left join t1 as t4 using (a) left join t1 as t5 using (a) left join t1 as t6 using (a) left join t1 as t7 using (a) left join t1 as t8 using (a) left join t1 as t9 using (a) left join t1 as t10 using (a) left join t1 as t11 using (a) left join t1 as t12 using (a) left join t1 as t13 using (a) left join t1 as t14 using (a) left join t1 as t15 using (a) left join t1 as t16 using (a) left join t1 as t17 using (a) left join t1 as t18 using (a) left join t1 as t19 using (a) left join t1 as t20 using (a) left join t1 as t21 using (a) left join t1 as t22 using (a) left join t1 as t23 using (a) left join t1 as t24 using (a) left join t1 as t25 using (a) left join t1 as t26 using (a) left join t1 as t27 using (a) left join t1 as t28 using (a) left join t1 as t29 using (a) left join t1 as t30 using (a) left join t1 as t31 using (a);
a
1
2
select t1.a from t1 as t1 left join t1 as t2 using (a) left join t1 as t3 using (a) left join t1 as t4 using (a) left join t1 as t5 using (a) left join t1 as t6 using (a) left join t1 as t7 using (a) left join t1 as t8 using (a) left join t1 as t9 using (a) left join t1 as t10 using (a) left join t1 as t11 using (a) left join t1 as t12 using (a) left join t1 as t13 using (a) left join t1 as t14 using (a) left join t1 as t15 using (a) left join t1 as t16 using (a) left join t1 as t17 using (a) left join t1 as t18 using (a) left join t1 as t19 using (a) left join t1 as t20 using (a) left join t1 as t21 using (a) left join t1 as t22 using (a) left join t1 as t23 using (a) left join t1 as t24 using (a) left join t1 as t25 using (a) left join t1 as t26 using (a) left join t1 as t27 using (a) left join t1 as t28 using (a) left join t1 as t29 using (a) left join t1 as t30 using (a) left join t1 as t31 using (a) left join t1 as t32 using (a) left join t1 as t33 using (a) left join t1 as t34 using (a) left join t1 as t35 using (a) left join t1 as t36 using (a) left join t1 as t37 using (a) left join t1 as t38 using (a) left join t1 as t39 using (a) left join t1 as t40 using (a) left join t1 as t41 using (a) left join t1 as t42 using (a) left join t1 as t43 using (a) left join t1 as t44 using (a) left join t1 as t45 using (a) left join t1 as t46 using (a) left join t1 as t47 using (a) left join t1 as t48 using (a) left join t1 as t49 using (a) left join t1 as t50 using (a) left join t1 as t51 using (a) left join t1 as t52 using (a) left join t1 as t53 using (a) left join t1 as t54 using (a) left join t1 as t55 using (a) left join t1 as t56 using (a) left join t1 as t57 using (a) left join t1 as t58 using (a) left join t1 as t59 using (a) left join t1 as t60 using (a) left join t1 as t61 using (a) left join t1 as t62 using (a) left join t1 as t63 using (a) left join t1 as t64 using (a) left join t1 as t65 using (a);
Too many tables. MySQL can only use 31 tables in a join
drop table t1;

View File

@ -1 +1,110 @@
DROP TABLE IF EXISTS t1,t2,t3,t4;
CREATE TABLE t1 (
project_id int(11) NOT NULL auto_increment,
project_row_lock int(11) NOT NULL default '0',
project_name varchar(80) NOT NULL default '',
client_ptr int(11) NOT NULL default '0',
project_contact_ptr int(11) default NULL,
client_contact_ptr int(11) default NULL,
billing_contact_ptr int(11) default NULL,
comments mediumtext,
PRIMARY KEY (project_id),
UNIQUE KEY project (client_ptr,project_name)
) TYPE=MyISAM PACK_KEYS=1;
INSERT INTO t1 VALUES (1,0,'Rejected Time',1,NULL,NULL,NULL,NULL);
INSERT INTO t1 VALUES (209,0,'MDGRAD Proposal/Investigation',97,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (208,0,'Font 9 Design',84,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (207,0,'Web Based Order Processing',95,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (205,0,'Mac Screen Saver',95,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (206,0,'Web Site',96,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (204,0,'Magnafire Glue',94,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (203,0,'Print Bid',93,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (202,0,'EPOC Port',92,NULL,NULL,NULL,'');
INSERT INTO t1 VALUES (201,0,'TravelMate',88,NULL,NULL,NULL,'');
CREATE TABLE t2 (
period_id int(11) NOT NULL auto_increment,
period_type enum('user_table','client_table','role_table','member_table','project_table') default NULL,
period_key int(11) default NULL,
start_date datetime default NULL,
end_date datetime default NULL,
work_load int(11) default NULL,
PRIMARY KEY (period_id),
KEY period_index (period_type,period_key),
KEY date_index (start_date,end_date)
) TYPE=MyISAM PACK_KEYS=1;
INSERT INTO t2 VALUES (1,'user_table',98,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (2,'user_table',99,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (3,'user_table',100,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (49,'project_table',148,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (50,'client_table',68,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (51,'project_table',149,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (52,'project_table',150,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (53,'client_table',69,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (54,'project_table',151,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (55,'client_table',70,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (155,'role_table',1,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (156,'role_table',2,'2000-01-01 00:00:00',NULL,NULL);
INSERT INTO t2 VALUES (160,'member_table',1,'2000-01-01 00:00:00',NULL,1);
INSERT INTO t2 VALUES (161,'member_table',2,'2000-01-01 00:00:00',NULL,1);
INSERT INTO t2 VALUES (162,'member_table',3,'2000-01-01 00:00:00',NULL,1);
CREATE TABLE t3 (
budget_id int(11) NOT NULL auto_increment,
project_ptr int(11) NOT NULL default '0',
po_number varchar(20) NOT NULL default '',
status enum('open','closed') default NULL,
date_received datetime default NULL,
amount_received float(10,2) default NULL,
adjustment float(10,2) default NULL,
PRIMARY KEY (budget_id),
UNIQUE KEY po (project_ptr,po_number)
) TYPE=MyISAM PACK_KEYS=1;
CREATE TABLE t4 (
client_id int(11) NOT NULL auto_increment,
client_row_lock int(11) NOT NULL default '0',
client_name varchar(80) NOT NULL default '',
contact_ptr int(11) default NULL,
comments mediumtext,
PRIMARY KEY (client_id),
UNIQUE KEY client_name (client_name)
) TYPE=MyISAM PACK_KEYS=1;
INSERT INTO t4 VALUES (1,0,'CPS',NULL,NULL);
select distinct
t1.project_id as project_id,
t1.project_name as project_name,
t1.client_ptr as client_ptr,
t1.comments as comments,
sum( t3.amount_received ) + sum( t3.adjustment ) as total_budget
from
t1 ,
t2 as client_period ,
t2 as project_period
left join
t3
on
t3.project_ptr = t1.project_id
and t3.date_received <= '2001-03-22 14:15:09'
left join
t4
on
t4.client_id = t1.client_ptr
where
1
and ( client_period.period_type = 'client_table'
and client_period.period_key = t4.client_id
and ( client_period.start_date <= '2001-03-22 14:15:09' or isnull( client_period.start_date ))
and ( client_period.end_date > '2001-03-21 14:15:09' or isnull( client_period.end_date ))
)
and ( project_period.period_type = 'project_table'
and project_period.period_key = t1.project_id
and ( project_period.start_date <= '2001-03-22 14:15:09' or isnull( project_period.start_date ))
and ( project_period.end_date > '2001-03-21 14:15:09' or isnull( project_period.end_date )) )
group by
client_id,
project_id ,
client_period.period_id ,
project_period.period_id
order by
client_name asc,
project_name asc;
project_id project_name client_ptr comments total_budget
DROP TABLE t1,t2,t3,t4;

View File

@ -1,8 +1,19 @@
drop table if exists t1,t2,t3,t4,t5;
CREATE TABLE t1 (
grp int(11) default NULL,
a bigint(20) unsigned default NULL,
c char(10) NOT NULL default ''
) TYPE=MyISAM;
INSERT INTO t1 VALUES (1,1,'a'),(2,2,'b'),(2,3,'c'),(3,4,'E'),(3,5,'C'),(3,6,'D'),(NULL,NULL,'');
create table t2 (id int, a bigint unsigned not null, c char(10), d int, primary key (a));
insert into t2 values (1,1,"a",1),(3,4,"A",4),(3,5,"B",5),(3,6,"C",6),(4,7,"D",7);
select t1.*,t2.* from t1 JOIN t2 where t1.a=t2.a;
grp a c id a c d
1 1 a 1 1 a 1
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) order by t1.grp,t1.a,t2.c;
grp a c id a c d
NULL NULL NULL NULL NULL NULL
1 1 a 1 1 a 1
@ -11,18 +22,21 @@ NULL NULL NULL NULL NULL NULL
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
select t1.*,t2.* from { oj t2 left outer join t1 on (t1.a=t2.a) };
grp a c id a c d
1 1 a 1 1 a 1
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
NULL NULL NULL 4 7 D 7
select t1.*,t2.* from t1 as t0,{ oj t2 left outer join t1 on (t1.a=t2.a) } WHERE t0.a=2;
grp a c id a c d
1 1 a 1 1 a 1
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
NULL NULL NULL 4 7 D 7
select t1.*,t2.* from t1 left join t2 using (a);
grp a c id a c d
1 1 a 1 1 a 1
2 2 b NULL NULL NULL NULL
@ -31,11 +45,13 @@ grp a c id a c d
3 5 C 3 5 B 5
3 6 D 3 6 C 6
NULL NULL NULL NULL NULL NULL
select t1.*,t2.* from t1 left join t2 using (a) where t1.a=t2.a;
grp a c id a c d
1 1 a 1 1 a 1
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
select t1.*,t2.* from t1 left join t2 using (a,c);
grp a c id a c d
1 1 a 1 1 a 1
2 2 b NULL NULL NULL NULL
@ -44,6 +60,7 @@ grp a c id a c d
3 5 C NULL NULL NULL NULL
3 6 D NULL NULL NULL NULL
NULL NULL NULL NULL NULL NULL
select t1.*,t2.* from t1 left join t2 using (c);
grp a c id a c d
1 1 a 1 1 a 1
1 1 a 3 4 A 4
@ -53,6 +70,7 @@ grp a c id a c d
3 5 C 3 6 C 6
3 6 D 4 7 D 7
NULL NULL NULL NULL NULL NULL
select t1.*,t2.* from t1 natural left outer join t2;
grp a c id a c d
1 1 a 1 1 a 1
2 2 b NULL NULL NULL NULL
@ -61,19 +79,24 @@ grp a c id a c d
3 5 C NULL NULL NULL NULL
3 6 D NULL NULL NULL NULL
NULL NULL NULL NULL NULL NULL
select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id=3;
grp a c id a c d
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
select t1.*,t2.* from t1 left join t2 on (t1.a=t2.a) where t2.id is null;
grp a c id a c d
2 2 b NULL NULL NULL NULL
2 3 c NULL NULL NULL NULL
NULL NULL NULL NULL NULL NULL
explain select t1.*,t2.* from t1,t2 where t1.a=t2.a and isnull(t2.a)=1;
Comment
Impossible WHERE noticed after reading const tables
explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 7
t2 eq_ref PRIMARY PRIMARY 8 t1.a 1 where used
select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
grp a c id a c d a
1 1 a 1 1 a 1 1
2 2 b NULL NULL NULL NULL NULL
@ -82,28 +105,161 @@ grp a c id a c d a
3 5 C 3 5 B 5 5
3 6 D 3 6 C 6 6
NULL NULL NULL NULL NULL NULL NULL
explain select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t1.a=t3.a);
Cross dependency found in OUTER JOIN. Examine your ON conditions
select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t1.a=t3.a);
Cross dependency found in OUTER JOIN. Examine your ON conditions
select t1.*,t2.*,t3.a from t1 left join t2 on (t3.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
Cross dependency found in OUTER JOIN. Examine your ON conditions
select t1.*,t2.* from t1 inner join t2 using (a);
grp a c id a c d
1 1 a 1 1 a 1
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
select t1.*,t2.* from t1 inner join t2 on (t1.a=t2.a);
grp a c id a c d
1 1 a 1 1 a 1
3 4 E 3 4 A 4
3 5 C 3 5 B 5
3 6 D 3 6 C 6
select t1.*,t2.* from t1 natural join t2;
grp a c id a c d
1 1 a 1 1 a 1
drop table t1,t2;
CREATE TABLE t1 (
usr_id INT unsigned NOT NULL,
uniq_id INT unsigned NOT NULL AUTO_INCREMENT,
start_num INT unsigned NOT NULL DEFAULT 1,
increment INT unsigned NOT NULL DEFAULT 1,
PRIMARY KEY (uniq_id),
INDEX usr_uniq_idx (usr_id, uniq_id),
INDEX uniq_usr_idx (uniq_id, usr_id)
);
CREATE TABLE t2 (
id INT unsigned NOT NULL DEFAULT 0,
usr2_id INT unsigned NOT NULL DEFAULT 0,
max INT unsigned NOT NULL DEFAULT 0,
c_amount INT unsigned NOT NULL DEFAULT 0,
d_max INT unsigned NOT NULL DEFAULT 0,
d_num INT unsigned NOT NULL DEFAULT 0,
orig_time INT unsigned NOT NULL DEFAULT 0,
c_time INT unsigned NOT NULL DEFAULT 0,
active ENUM ("no","yes") NOT NULL,
PRIMARY KEY (id,usr2_id),
INDEX id_idx (id),
INDEX usr2_idx (usr2_id)
);
INSERT INTO t1 VALUES (3,NULL,0,50),(3,NULL,0,200),(3,NULL,0,25),(3,NULL,0,84676),(3,NULL,0,235),(3,NULL,0,10),(3,NULL,0,3098),(3,NULL,0,2947),(3,NULL,0,8987),(3,NULL,0,8347654),(3,NULL,0,20398),(3,NULL,0,8976),(3,NULL,0,500),(3,NULL,0,198);
SELECT t1.usr_id,t1.uniq_id,t1.increment,
t2.usr2_id,t2.c_amount,t2.max
FROM t1
LEFT JOIN t2 ON t2.id = t1.uniq_id
WHERE t1.uniq_id = 4
ORDER BY t2.c_amount;
usr_id uniq_id increment usr2_id c_amount max
3 4 84676 NULL NULL NULL
SELECT t1.usr_id,t1.uniq_id,t1.increment,
t2.usr2_id,t2.c_amount,t2.max
FROM t2
RIGHT JOIN t1 ON t2.id = t1.uniq_id
WHERE t1.uniq_id = 4
ORDER BY t2.c_amount;
usr_id uniq_id increment usr2_id c_amount max
3 4 84676 NULL NULL NULL
INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes');
INSERT INTO t2 VALUES (2,3,3000,6000,0,0,746584,837484,'yes');
Duplicate entry '2-3' for key 1
INSERT INTO t2 VALUES (7,3,1000,2000,0,0,746294,937484,'yes');
SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 ORDER BY t2.c_amount;
usr_id uniq_id increment usr2_id c_amount max
3 4 84676 NULL NULL NULL
SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4 GROUP BY t2.c_amount;
usr_id uniq_id increment usr2_id c_amount max
3 4 84676 NULL NULL NULL
SELECT t1.usr_id,t1.uniq_id,t1.increment,t2.usr2_id,t2.c_amount,t2.max FROM t1 LEFT JOIN t2 ON t2.id = t1.uniq_id WHERE t1.uniq_id = 4;
usr_id uniq_id increment usr2_id c_amount max
3 4 84676 NULL NULL NULL
drop table t1,t2;
drop table if exists t1,t2,t3,t4;
CREATE TABLE t1 (
cod_asig int(11) DEFAULT '0' NOT NULL,
desc_larga_cat varchar(80) DEFAULT '' NOT NULL,
desc_larga_cas varchar(80) DEFAULT '' NOT NULL,
desc_corta_cat varchar(40) DEFAULT '' NOT NULL,
desc_corta_cas varchar(40) DEFAULT '' NOT NULL,
cred_total double(3,1) DEFAULT '0.0' NOT NULL,
pre_requisit int(11),
co_requisit int(11),
preco_requisit int(11),
PRIMARY KEY (cod_asig)
);
INSERT INTO t1 VALUES (10360,'asdfggfg','Introduccion a los Ordenadores I','asdfggfg','Introduccio Ordinadors I',6.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (10361,'Components i Circuits Electronics I','Componentes y Circuitos Electronicos I','Components i Circuits Electronics I','Comp. i Circ. Electr. I',6.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (10362,'Laboratori d`Ordinadors','Laboratorio de Ordenadores','Laboratori d`Ordinadors','Laboratori Ordinadors',4.5,NULL,NULL,NULL);
INSERT INTO t1 VALUES (10363,'Tecniques de Comunicacio Oral i Escrita','Tecnicas de Comunicacion Oral y Escrita','Tecniques de Comunicacio Oral i Escrita','Tec. Com. Oral i Escrita',4.5,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11403,'Projecte Fi de Carrera','Proyecto Fin de Carrera','Projecte Fi de Carrera','PFC',9.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11404,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',15.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11405,'+lgebra lineal','Algebra lineal','+lgebra lineal','+lgebra lineal',18.0,NULL,NULL,NULL);
INSERT INTO t1 VALUES (11406,'Calcul Infinitesimal','Cßlculo Infinitesimal','Calcul Infinitesimal','Calcul Infinitesimal',15.0,NULL,NULL,NULL);
CREATE TABLE t2 (
idAssignatura int(11) DEFAULT '0' NOT NULL,
Grup int(11) DEFAULT '0' NOT NULL,
Places smallint(6) DEFAULT '0' NOT NULL,
PlacesOcupades int(11) DEFAULT '0',
PRIMARY KEY (idAssignatura,Grup)
);
INSERT INTO t2 VALUES (10360,12,333,0);
INSERT INTO t2 VALUES (10361,30,2,0);
INSERT INTO t2 VALUES (10361,40,3,0);
INSERT INTO t2 VALUES (10360,45,10,0);
INSERT INTO t2 VALUES (10362,10,12,0);
INSERT INTO t2 VALUES (10360,55,2,0);
INSERT INTO t2 VALUES (10360,70,0,0);
INSERT INTO t2 VALUES (10360,565656,0,0);
INSERT INTO t2 VALUES (10360,32767,7,0);
INSERT INTO t2 VALUES (10360,33,8,0);
INSERT INTO t2 VALUES (10360,7887,85,0);
INSERT INTO t2 VALUES (11405,88,8,0);
INSERT INTO t2 VALUES (10360,0,55,0);
INSERT INTO t2 VALUES (10360,99,0,0);
INSERT INTO t2 VALUES (11411,30,10,0);
INSERT INTO t2 VALUES (11404,0,0,0);
INSERT INTO t2 VALUES (10362,11,111,0);
INSERT INTO t2 VALUES (10363,33,333,0);
INSERT INTO t2 VALUES (11412,55,0,0);
INSERT INTO t2 VALUES (50003,66,6,0);
INSERT INTO t2 VALUES (11403,5,0,0);
INSERT INTO t2 VALUES (11406,11,11,0);
INSERT INTO t2 VALUES (11410,11410,131,0);
INSERT INTO t2 VALUES (11416,11416,32767,0);
INSERT INTO t2 VALUES (11409,0,0,0);
CREATE TABLE t3 (
id int(11) DEFAULT '0' NOT NULL auto_increment,
dni_pasaporte char(16) DEFAULT '' NOT NULL,
idPla int(11) DEFAULT '0' NOT NULL,
cod_asig int(11) DEFAULT '0' NOT NULL,
any smallint(6) DEFAULT '0' NOT NULL,
quatrimestre smallint(6) DEFAULT '0' NOT NULL,
estat char(1) DEFAULT 'M' NOT NULL,
PRIMARY KEY (id),
UNIQUE dni_pasaporte (dni_pasaporte,idPla),
UNIQUE dni_pasaporte_2 (dni_pasaporte,idPla,cod_asig,any,quatrimestre)
);
INSERT INTO t3 VALUES (1,'11111111',1,10362,98,1,'M');
CREATE TABLE t4 (
id int(11) DEFAULT '0' NOT NULL auto_increment,
papa int(11) DEFAULT '0' NOT NULL,
fill int(11) DEFAULT '0' NOT NULL,
idPla int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (id),
KEY papa (idPla,papa),
UNIQUE papa_2 (idPla,papa,fill)
);
INSERT INTO t4 VALUES (1,-1,10360,1);
INSERT INTO t4 VALUES (2,-1,10361,1);
INSERT INTO t4 VALUES (3,-1,10362,1);
SELECT DISTINCT fill,desc_larga_cat,cred_total,Grup,Places,PlacesOcupades FROM t4 LEFT JOIN t3 ON t3.cod_asig=fill AND estat='S' AND dni_pasaporte='11111111' AND t3.idPla=1 , t2,t1 WHERE fill=t1.cod_asig AND Places>PlacesOcupades AND fill=idAssignatura AND t4.idPla=1 AND papa=-1;
fill desc_larga_cat cred_total Grup Places PlacesOcupades
10360 asdfggfg 6.0 0 55 0
10360 asdfggfg 6.0 12 333 0
@ -116,49 +272,82 @@ fill desc_larga_cat cred_total Grup Places PlacesOcupades
10361 Components i Circuits Electronics I 6.0 40 3 0
10362 Laboratori d`Ordinadors 4.5 10 12 0
10362 Laboratori d`Ordinadors 4.5 11 111 0
SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ;
fill idPla
10360 NULL
10361 NULL
10362 NULL
INSERT INTO t3 VALUES (3,'1234',1,10360,98,1,'S');
SELECT DISTINCT fill,t3.idPla FROM t4 LEFT JOIN t3 ON t3.cod_asig=t4.fill AND t3.estat='S' AND t3.dni_pasaporte='1234' AND t3.idPla=1 ;
fill idPla
10360 1
10361 NULL
10362 NULL
drop table t1,t2,t3,test.t4;
CREATE TABLE t1 (
id smallint(5) unsigned DEFAULT '0' NOT NULL auto_increment,
name char(60) DEFAULT '' NOT NULL,
PRIMARY KEY (id)
);
INSERT INTO t1 VALUES (1,'Antonio Paz');
INSERT INTO t1 VALUES (2,'Lilliana Angelovska');
INSERT INTO t1 VALUES (3,'Thimble Smith');
CREATE TABLE t2 (
id smallint(5) unsigned DEFAULT '0' NOT NULL auto_increment,
owner smallint(5) unsigned DEFAULT '0' NOT NULL,
name char(60),
PRIMARY KEY (id)
);
INSERT INTO t2 VALUES (1,1,'El Gato');
INSERT INTO t2 VALUES (2,1,'Perrito');
INSERT INTO t2 VALUES (3,3,'Happy');
select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner);
name name id
Antonio Paz El Gato 1
Antonio Paz Perrito 2
Lilliana Angelovska NULL NULL
Thimble Smith Happy 3
select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null;
name name id
Lilliana Angelovska NULL NULL
explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 3
t2 ALL NULL NULL NULL NULL 3 where used; Not exists
explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.name is null;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 3
t2 ALL NULL NULL NULL NULL 3 where used
select count(*) from t1 left join t2 on (t1.id = t2.owner);
count(*)
4
select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner);
name name id
Antonio Paz El Gato 1
Antonio Paz Perrito 2
Lilliana Angelovska NULL NULL
Thimble Smith Happy 3
select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null;
name name id
Lilliana Angelovska NULL NULL
explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 3
t2 ALL NULL NULL NULL NULL 3 where used; Not exists
explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.name is null;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 3
t2 ALL NULL NULL NULL NULL 3 where used
select count(*) from t2 right join t1 on (t1.id = t2.owner);
count(*)
4
select t1.name, t2.name, t2.id,t3.id from t2 right join t1 on (t1.id = t2.owner) left join t1 as t3 on t3.id=t2.owner;
name name id id
Antonio Paz El Gato 1 1
Antonio Paz Perrito 2 1
Lilliana Angelovska NULL NULL NULL
Thimble Smith Happy 3 3
select t1.name, t2.name, t2.id,t3.id from t1 right join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner;
name name id id
Antonio Paz El Gato 1 1
Antonio Paz Perrito 2 1
@ -169,6 +358,7 @@ NULL Happy 3 2
NULL El Gato 1 3
NULL Perrito 2 3
Thimble Smith Happy 3 3
select t1.name, t2.name, t2.id, t2.owner, t3.id from t1 left join t2 on (t1.id = t2.owner) right join t1 as t3 on t3.id=t2.owner;
name name id owner id
Antonio Paz El Gato 1 1 1
Antonio Paz Perrito 2 1 1
@ -180,49 +370,136 @@ Thimble Smith NULL NULL NULL 2
Antonio Paz NULL NULL NULL 3
Lilliana Angelovska NULL NULL NULL 3
Thimble Smith Happy 3 3 3
drop table t1,t2;
create table t1 (id int not null, str char(10), index(str));
insert into t1 values (1, null), (2, null), (3, "foo"), (4, "bar");
select * from t1 where str is not null;
id str
4 bar
3 foo
select * from t1 where str is null;
id str
1 NULL
2 NULL
drop table t1;
CREATE TABLE t1 (
t1_id bigint(21) DEFAULT '0' NOT NULL auto_increment,
PRIMARY KEY (t1_id)
);
CREATE TABLE t2 (
t2_id bigint(21) DEFAULT '0' NOT NULL auto_increment,
PRIMARY KEY (t2_id)
);
CREATE TABLE t3 (
t3_id bigint(21) DEFAULT '0' NOT NULL auto_increment,
PRIMARY KEY (t3_id)
);
CREATE TABLE t4 (
seq_0_id bigint(21) DEFAULT '0' NOT NULL,
seq_1_id bigint(21) DEFAULT '0' NOT NULL,
KEY seq_0_id (seq_0_id),
KEY seq_1_id (seq_1_id)
);
CREATE TABLE t5 (
seq_0_id bigint(21) DEFAULT '0' NOT NULL,
seq_1_id bigint(21) DEFAULT '0' NOT NULL,
KEY seq_1_id (seq_1_id),
KEY seq_0_id (seq_0_id)
);
insert into t1 values (1);
insert into t2 values (1);
insert into t3 values (1);
insert into t4 values (1,1);
insert into t5 values (1,1);
explain select * from t3 left join t4 on t4.seq_1_id = t2.t2_id left join t1 on t1.t1_id = t4.seq_0_id left join t5 on t5.seq_0_id = t1.t1_id left join t2 on t2.t2_id = t5.seq_1_id where t3.t3_id = 23;
Cross dependency found in OUTER JOIN. Examine your ON conditions
drop table t1,t2,t3,t4,t5;
create table t1 (n int, m int, o int, key(n));
create table t2 (n int not null, m int, o int, primary key(n));
insert into t1 values (1, 2, 11), (1, 2, 7), (2, 2, 8), (1,2,9),(1,3,9);
insert into t2 values (1, 2, 3),(2, 2, 8), (4,3,9),(3,2,10);
select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and
t1.m = t2.m where t1.n = 1;
n m o n m o
1 2 11 1 2 3
1 2 7 1 2 3
1 2 9 1 2 3
1 3 9 NULL NULL NULL
select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and
t1.m = t2.m where t1.n = 1 order by t1.o;
n m o n m o
1 2 7 1 2 3
1 2 9 1 2 3
1 3 9 NULL NULL NULL
1 2 11 1 2 3
drop table t1,t2;
CREATE TABLE t1 (id1 INT NOT NULL PRIMARY KEY, dat1 CHAR(1), id2 INT);
INSERT INTO t1 VALUES (1,'a',1);
INSERT INTO t1 VALUES (2,'b',1);
INSERT INTO t1 VALUES (3,'c',2);
CREATE TABLE t2 (id2 INT NOT NULL PRIMARY KEY, dat2 CHAR(1));
INSERT INTO t2 VALUES (1,'x');
INSERT INTO t2 VALUES (2,'y');
INSERT INTO t2 VALUES (3,'z');
SELECT t2.id2 FROM t2 LEFT OUTER JOIN t1 ON t1.id2 = t2.id2 WHERE id1 IS NULL;
id2
3
SELECT t2.id2 FROM t2 NATURAL LEFT OUTER JOIN t1 WHERE id1 IS NULL;
id2
3
drop table t1,t2;
create table t1 ( color varchar(20), name varchar(20) );
insert into t1 values ( 'red', 'apple' );
insert into t1 values ( 'yellow', 'banana' );
insert into t1 values ( 'green', 'lime' );
insert into t1 values ( 'black', 'grape' );
insert into t1 values ( 'blue', 'blueberry' );
create table t2 ( count int, color varchar(20) );
insert into t2 values (10, 'green');
insert into t2 values (5, 'black');
insert into t2 values (15, 'white');
insert into t2 values (7, 'green');
select * from t1;
color name
red apple
yellow banana
green lime
black grape
blue blueberry
select * from t2;
count color
10 green
5 black
15 white
7 green
select * from t2 natural join t1;
count color color name
10 green green lime
7 green green lime
5 black black grape
select t2.count, t1.name from t2 natural join t1;
count name
10 lime
7 lime
5 grape
select t2.count, t1.name from t2 inner join t1 using (color);
count name
10 lime
7 lime
5 grape
drop table t1;
drop table t2;
CREATE TABLE t1 (
pcode varchar(8) DEFAULT '' NOT NULL
);
INSERT INTO t1 VALUES ('kvw2000'),('kvw2001'),('kvw3000'),('kvw3001'),('kvw3002'),('kvw3500'),('kvw3501'),('kvw3502'),('kvw3800'),('kvw3801'),('kvw3802'),('kvw3900'),('kvw3901'),('kvw3902'),('kvw4000'),('kvw4001'),('kvw4002'),('kvw4200'),('kvw4500'),('kvw5000'),('kvw5001'),('kvw5500'),('kvw5510'),('kvw5600'),('kvw5601'),('kvw6000'),('klw1000'),('klw1020'),('klw1500'),('klw2000'),('klw2001'),('klw2002'),('kld2000'),('klw2500'),('kmw1000'),('kmw1500'),('kmw2000'),('kmw2001'),('kmw2100'),('kmw3000'),('kmw3200');
CREATE TABLE t2 (
pcode varchar(8) DEFAULT '' NOT NULL,
KEY pcode (pcode)
);
INSERT INTO t2 VALUES ('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw2000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3000'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw3500'),('kvw6000'),('kvw6000'),('kld2000');
SELECT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1
LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode;
pcode count
kld2000 1
klw1000 0
@ -265,6 +542,7 @@ kvw5510 0
kvw5600 0
kvw5601 0
kvw6000 2
SELECT SQL_BIG_RESULT t1.pcode, IF(ISNULL(t2.pcode), 0, COUNT(*)) AS count FROM t1 LEFT JOIN t2 ON t1.pcode = t2.pcode GROUP BY t1.pcode;
pcode count
kld2000 1
klw1000 0
@ -307,14 +585,43 @@ kvw5510 0
kvw5600 0
kvw5601 0
kvw6000 2
drop table t1,t2;
CREATE TABLE t1 (
id int(11),
pid int(11),
rep_del tinyint(4),
KEY id (id),
KEY pid (pid)
);
INSERT INTO t1 VALUES (1,NULL,NULL);
INSERT INTO t1 VALUES (2,1,NULL);
select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL;
id pid rep_del id pid rep_del
1 NULL NULL 2 1 NULL
2 1 NULL NULL NULL NULL
create index rep_del ON t1(rep_del);
select * from t1 LEFT JOIN t1 t2 ON (t1.id=t2.pid) AND t2.rep_del IS NULL;
id pid rep_del id pid rep_del
1 NULL NULL 2 1 NULL
2 1 NULL NULL NULL NULL
drop table t1;
CREATE TABLE t1 (
id int(11) DEFAULT '0' NOT NULL,
name tinytext DEFAULT '' NOT NULL,
UNIQUE id (id)
);
INSERT INTO t1 VALUES (1,'yes'),(2,'no');
CREATE TABLE t2 (
id int(11) DEFAULT '0' NOT NULL,
idx int(11) DEFAULT '0' NOT NULL,
UNIQUE id (id,idx)
);
INSERT INTO t2 VALUES (1,1);
explain SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 2
t2 index id id 8 NULL 1 where used; Using index; Not exists
SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
id name id idx
2 no NULL NULL
drop table t1,t2;

View File

@ -1,19 +1,140 @@
drop table if exists t1,t2,t3;
CREATE TABLE t1 (
ID CHAR(32) NOT NULL,
name CHAR(32) NOT NULL,
value CHAR(255),
INDEX indexIDname (ID(8),name(8))
) ;
INSERT INTO t1 VALUES
('keyword','indexdir','/export/home/local/www/database/indexes/keyword');
INSERT INTO t1 VALUES ('keyword','urlprefix','text/ /text');
INSERT INTO t1 VALUES ('keyword','urlmap','/text/ /');
INSERT INTO t1 VALUES ('keyword','attr','personal employee company');
INSERT INTO t1 VALUES
('emailgids','indexdir','/export/home/local/www/database/indexes/emailgids');
INSERT INTO t1 VALUES ('emailgids','urlprefix','text/ /text');
INSERT INTO t1 VALUES ('emailgids','urlmap','/text/ /');
INSERT INTO t1 VALUES ('emailgids','attr','personal employee company');
SELECT value FROM t1 WHERE ID='emailgids' AND name='attr';
value
personal employee company
drop table t1;
CREATE TABLE t1 (
price int(5) DEFAULT '0' NOT NULL,
area varchar(40) DEFAULT '' NOT NULL,
type varchar(40) DEFAULT '' NOT NULL,
transityes enum('Y','N') DEFAULT 'Y' NOT NULL,
shopsyes enum('Y','N') DEFAULT 'Y' NOT NULL,
schoolsyes enum('Y','N') DEFAULT 'Y' NOT NULL,
petsyes enum('Y','N') DEFAULT 'Y' NOT NULL,
KEY price (price,area,type,transityes,shopsyes,schoolsyes,petsyes)
);
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','N','N','N','N');
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','N','N','N','N');
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','','','','');
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','Y','Y','Y','Y');
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','Y','Y','Y','Y');
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','Y','Y','Y','Y');
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','Y','Y','Y','Y');
INSERT INTO t1 VALUES (900,'Vancouver','Shared/Roomate','Y','Y','Y','Y');
SELECT * FROM t1 WHERE area='Vancouver' and transityes='y' and schoolsyes='y' and ( ((type='1 Bedroom' or type='Studio/Bach') and (price<=500)) or ((type='2 Bedroom') and (price<=550)) or ((type='Shared/Roomate') and (price<=300)) or ((type='Room and Board') and (price<=500)) ) and price <= 400;
price area type transityes shopsyes schoolsyes petsyes
drop table t1;
CREATE TABLE t1 (program enum('signup','unique','sliding') not null, type enum('basic','sliding','signup'), sites set('mt'), PRIMARY KEY (program));
ALTER TABLE t1 modify program enum('signup','unique','sliding');
All parts of a PRIMARY KEY must be NOT NULL; If you need NULL in a key, use UNIQUE instead
drop table t1;
CREATE TABLE t1 (
name varchar(50) DEFAULT '' NOT NULL,
author varchar(50) DEFAULT '' NOT NULL,
category decimal(10,0) DEFAULT '0' NOT NULL,
email varchar(50),
password varchar(50),
proxy varchar(50),
bitmap varchar(20),
msg varchar(255),
urlscol varchar(127),
urlhttp varchar(127),
timeout decimal(10,0),
nbcnx decimal(10,0),
creation decimal(10,0),
livinguntil decimal(10,0),
lang decimal(10,0),
type decimal(10,0),
subcat decimal(10,0),
subtype decimal(10,0),
reg char(1),
scs varchar(255),
capacity decimal(10,0),
userISP varchar(50),
CCident varchar(50) DEFAULT '' NOT NULL,
PRIMARY KEY (name,author,category)
);
INSERT INTO t1 VALUES
('patnom','patauteur',0,'p.favre@cryo-networks.fr',NULL,NULL,'#p2sndnq6ae5g1u6t','essai\nsalut','scol://195.242.78.119:patauteur.patnom',NULL,NULL,NULL,950036174,-882087474,NULL,3,0,3,'1','Pub/patnom/futur_divers.scs',NULL,'pat','CC1');
INSERT INTO t1 VALUES
('LeNomDeMonSite','Marc',0,'m.barilley@cryo-networks.fr',NULL,NULL,NULL,NULL,'scol://195.242.78.119:Marc.LeNomDeMonSite',NULL,NULL,NULL,950560434,-881563214,NULL,3,0,3,'1','Pub/LeNomDeMonSite/domus_hibere.scs',NULL,'Marq','CC1');
select * from t1 where name='patnom' and author='patauteur' and category=0;
name author category email password proxy bitmap msg urlscol urlhttp timeout nbcnx creation livinguntil lang type subcat subtype reg scs capacity userISP CCident
patnom patauteur 0 p.favre@cryo-networks.fr NULL NULL #p2sndnq6ae5g1u6t essai
salut scol://195.242.78.119:patauteur.patnom NULL NULL NULL 950036174 -882087474 NULL 3 0 3 1 Pub/patnom/futur_divers.scs NULL pat CC1
drop table t1;
create table t1
(
name_id int not null auto_increment,
name blob,
INDEX name_idx (name(5)),
primary key (name_id)
);
INSERT t1 VALUES(NULL,'/');
INSERT t1 VALUES(NULL,'[T,U]_axpby');
SELECT * FROM t1 WHERE name='[T,U]_axpy';
name_id name
SELECT * FROM t1 WHERE name='[T,U]_axpby';
name_id name
2 [T,U]_axpby
create table t2
(
name_id int not null auto_increment,
name char(255) binary,
INDEX name_idx (name(5)),
primary key (name_id)
);
INSERT t2 select * from t1;
SELECT * FROM t2 WHERE name='[T,U]_axpy';
name_id name
SELECT * FROM t2 WHERE name='[T,U]_axpby';
name_id name
2 [T,U]_axpby
drop table t1,t2;
create table t1
(
SEQNO numeric(12 ) not null,
MOTYPEID numeric(12 ) not null,
MOINSTANCEID numeric(12 ) not null,
ATTRID numeric(12 ) not null,
VALUE varchar(120) not null,
primary key (SEQNO, MOTYPEID, MOINSTANCEID, ATTRID, VALUE )
);
INSERT INTO t1 VALUES (1, 1, 1, 1, 'a');
INSERT INTO t1 VALUES (1, 1, 1, 1, 'b');
INSERT INTO t1 VALUES (1, 1, 1, 1, 'a');
Duplicate entry '1-1-1-1-a' for key 1
drop table t1;
CREATE TABLE t1 (
a tinytext NOT NULL,
b tinyint(3) unsigned NOT NULL default '0',
PRIMARY KEY (a(32),b)
) TYPE=MyISAM;
INSERT INTO t1 VALUES ('a',1),('a',2);
SELECT * FROM t1 WHERE a='a' AND b=2;
a b
a 2
SELECT * FROM t1 WHERE a='a' AND b in (2);
a b
a 2
SELECT * FROM t1 WHERE a='a' AND b in (1,2);
a b
a 1
a 2
drop table t1;

View File

@ -1,3 +1,12 @@
drop table if exists t1;
CREATE TABLE t1 (
a char(5) NOT NULL,
b char(4) NOT NULL,
KEY (a),
KEY (b)
);
INSERT INTO t1 VALUES ('A','B'),('b','A'),('C','c'),('D','E'),('a','a');
select * from t1,t1 as t2;
a b a b
A B A B
b A A B
@ -24,9 +33,11 @@ b A a a
C c a a
D E a a
a a a a
explain select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B;
table type possible_keys key key_len ref rows Extra
t1 ALL a NULL NULL NULL 5
t2 ALL b NULL NULL NULL 5 where used
select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B order by binary t1.a,t2.a;
a b a b
A B a a
A B b A
@ -34,6 +45,8 @@ C c C c
a a a a
a a b A
b A A B
select * from t1 where a='a';
a b
A B
a a
drop table t1;

View File

@ -1,9 +1,19 @@
create table t1 (t1 char(3) primary key);
insert into t1 values("ABC");
insert into t1 values("ABA");
insert into t1 values("AB%");
select * from t1 where t1="ABC";
t1
ABC
select * from t1 where t1="ABCD";
t1
select * from t1 where t1 like "a_\%";
t1
AB%
describe select * from t1 where t1="ABC";
table type possible_keys key key_len ref rows Extra
t1 const PRIMARY PRIMARY 3 const 1
describe select * from t1 where t1="ABCD";
Comment
Impossible WHERE noticed after reading const tables
drop table t1;

View File

@ -1,4 +1,10 @@
drop table if exists t1;
create table t1 (time time, date date, timestamp timestamp);
insert into t1 values ("12:22:22","97:02:03","1997-01-02");
select * from t1;
time date timestamp
12:22:22 1997-02-03 19970102000000
select t1.time+0,t1.date+0,t1.timestamp+0,concat(date," ",time) from t1;
t1.time+0 t1.date+0 t1.timestamp+0 concat(date," ",time)
122222 19970203 19970102000000 1997-02-03 12:22:22
drop table t1;

View File

@ -1,4 +1,11 @@
drop table if exists t1;
create table t1 (kill_id int);
insert into t1 values(connection_id());
select ((@id := kill_id) - kill_id) from t1;
((@id := kill_id) - kill_id)
0
kill @id;
select 4;
4
4
drop table t1;

View File

@ -1,25 +1,50 @@
drop table if exists t1;
create table t1 (a int primary key, b int not null);
insert into t1 () values ();
insert into t1 values (1,1),(2,1),(3,1);
update t1 set a=4 where b=1 limit 1;
select * from t1;
a b
0 0
4 1
2 1
3 1
update t1 set b=2 where b=1 limit 2;
select * from t1;
a b
0 0
4 2
2 2
3 1
update t1 set b=4 where b=1;
select * from t1;
a b
0 0
4 2
2 2
3 4
delete from t1 where b=2 limit 1;
select * from t1;
a b
0 0
2 2
3 4
delete from t1 limit 1;
select * from t1;
a b
2 2
3 4
drop table t1;
create table t1 (i int);
insert into t1 (i) values(1);
insert into t1 (i) values(1);
insert into t1 (i) values(1);
delete from t1 limit 1;
update t1 set i=2 limit 1;
delete from t1 limit 0;
update t1 set i=3 limit 0;
select * from t1;
i
2
1
drop table t1;

View File

@ -1,10 +1,63 @@
drop table if exists t1,t2;
CREATE TABLE t1 ( `id` int(11) NOT NULL default '0', `id2` int(11) NOT NULL default '0', `id3` int(11) NOT NULL default '0', `dummy1` char(30) default NULL, PRIMARY KEY (`id`,`id2`), KEY `index_id3` (`id3`)) TYPE=MyISAM;
insert into t1 (id,id2) values (1,1),(1,2),(1,3);
LOCK TABLE t1 WRITE;
select dummy1,count(distinct id) from t1 group by dummy1;
dummy1 count(distinct id)
NULL 1
update t1 set id=-1 where id=1;
LOCK TABLE t1 READ;
update t1 set id=1 where id=1;
Table 't1' was locked with a READ lock and can't be updated
create table t2 SELECT * from t1;
Table 't2' was not locked with LOCK TABLES
create temporary table t2 SELECT * from t1;
drop table if exists t2;
unlock tables;
create table t2 SELECT * from t1;
LOCK TABLE t1 WRITE,t2 write;
insert into t2 SELECT * from t1;
update t1 set id=1 where id=-1;
drop table t1,t2;
CREATE TABLE t1 (
index1 smallint(6) default NULL,
nr smallint(6) default NULL,
KEY index1(index1)
) TYPE=MyISAM;
CREATE TABLE t2 (
nr smallint(6) default NULL,
name varchar(20) default NULL
) TYPE=MyISAM;
INSERT INTO t2 VALUES (1,'item1');
INSERT INTO t2 VALUES (2,'item2');
lock tables t1 write, t2 read;
insert into t1 select 1,nr from t2 where name='item1';
insert into t1 select 2,nr from t2 where name='item2';
unlock tables;
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
lock tables t1 write;
check table t2;
Table Op Msg_type Msg_text
test.t2 check error Table 't2' was not locked with LOCK TABLES
unlock tables;
drop table t1,t2;
create table t1(n int);
insert into t1 values (1);
lock tables t1 write;
update low_priority t1 set n = 4;
select n from t1;
unlock tables;
n
4
drop table t1;
create table t1(n int);
insert into t1 values (1);
lock tables t1 read;
update low_priority t1 set n = 4;
select n from t1;
unlock tables;
n
1
drop table t1;

View File

@ -1,3 +1,10 @@
drop table if exists t1,t2,t3;
create table t1 (a int not null primary key auto_increment, message char(20));
create table t2 (a int not null primary key auto_increment, message char(20));
INSERT INTO t1 (message) VALUES ("Testing"),("table"),("t1");
INSERT INTO t2 (message) VALUES ("Testing"),("table"),("t2");
create table t3 (a int not null, b char(20), key(a)) type=MERGE UNION=(t1,t2);
select * from t3;
a b
1 Testing
2 table
@ -5,6 +12,7 @@ a b
1 Testing
2 table
3 t2
select * from t3 order by a desc;
a b
3 t1
3 t2
@ -12,13 +20,30 @@ a b
2 table
1 Testing
1 Testing
drop table t3;
insert into t1 select NULL,message from t2;
insert into t2 select NULL,message from t1;
insert into t1 select NULL,message from t2;
insert into t2 select NULL,message from t1;
insert into t1 select NULL,message from t2;
insert into t2 select NULL,message from t1;
insert into t1 select NULL,message from t2;
insert into t2 select NULL,message from t1;
insert into t1 select NULL,message from t2;
insert into t2 select NULL,message from t1;
insert into t1 select NULL,message from t2;
create table t3 (a int not null, b char(20), key(a)) type=MERGE UNION=(test.t1,test.t2);
explain select * from t3 where a < 10;
table type possible_keys key key_len ref rows Extra
t3 range a a 4 NULL 10 where used
explain select * from t3 where a > 10 and a < 20;
table type possible_keys key key_len ref rows Extra
t3 range a a 4 NULL 10 where used
select * from t3 where a = 10;
a b
10 Testing
10 Testing
select * from t3 where a < 10;
a b
1 Testing
1 Testing
@ -38,6 +63,7 @@ a b
8 table
9 t2
9 t2
select * from t3 where a > 10 and a < 20;
a b
11 table
11 table
@ -57,8 +83,10 @@ a b
18 t2
19 Testing
19 Testing
explain select a from t3 order by a desc limit 10;
table type possible_keys key key_len ref rows Extra
t3 index NULL a 4 NULL 1131 Using index
select a from t3 order by a desc limit 10;
a
699
698
@ -70,6 +98,7 @@ a
692
691
690
select a from t3 order by a desc limit 300,10;
a
416
415
@ -81,12 +110,29 @@ a
412
412
411
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`a` int(11) NOT NULL default '0',
`b` char(20) default NULL,
KEY `a` (`a`)
) TYPE=MRG_MyISAM UNION=(t1,t2)
create table t4 (a int not null, b char(10), key(a)) type=MERGE UNION=(t1,t2);
select * from t4;
Can't open file: 't4.MRG'. (errno: 143)
create table t5 (a int not null, b char(10), key(a)) type=MERGE UNION=(test.t1,test_2.t2);
Incorrect table definition; All MERGE tables must be in the same database
drop table if exists t5,t4,t3,t1,t2;
create table t1 (c char(10)) type=myisam;
create table t2 (c char(10)) type=myisam;
create table t3 (c char(10)) union=(t1,t2) type=merge;
insert into t1 (c) values ('test1');
insert into t1 (c) values ('test1');
insert into t1 (c) values ('test1');
insert into t2 (c) values ('test2');
insert into t2 (c) values ('test2');
insert into t2 (c) values ('test2');
select * from t3;
c
test1
test1
@ -94,6 +140,7 @@ test1
test2
test2
test2
select * from t3;
c
test1
test1
@ -101,32 +148,71 @@ test1
test2
test2
test2
delete from t3 where 1=1;
select * from t3;
c
select * from t1;
c
drop table t3,t2,t1;
CREATE TABLE t1 (incr int not null, othr int not null, primary key(incr));
CREATE TABLE t2 (incr int not null, othr int not null, primary key(incr));
CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
TYPE=MERGE UNION=(t1,t2);
SELECT * from t3;
incr othr
INSERT INTO t1 VALUES ( 1,10),( 3,53),( 5,21),( 7,12),( 9,17);
INSERT INTO t2 VALUES ( 2,24),( 4,33),( 6,41),( 8,26),( 0,32);
INSERT INTO t1 VALUES (11,20),(13,43),(15,11),(17,22),(19,37);
INSERT INTO t2 VALUES (12,25),(14,31),(16,42),(18,27),(10,30);
SELECT * from t3 where incr in (1,2,3,4) order by othr;
incr othr
1 10
2 24
4 33
3 53
alter table t3 UNION=(t1);
select count(*) from t3;
count(*)
10
alter table t3 UNION=(t1,t2);
select count(*) from t3;
count(*)
20
alter table t3 TYPE=MYISAM;
select count(*) from t3;
count(*)
20
drop table t3;
CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
TYPE=MERGE UNION=(t1,t2);
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`incr` int(11) NOT NULL default '0',
`othr` int(11) NOT NULL default '0',
PRIMARY KEY (`incr`)
) TYPE=MRG_MyISAM UNION=(t1,t2)
alter table t3 drop primary key;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`incr` int(11) NOT NULL default '0',
`othr` int(11) NOT NULL default '0'
) TYPE=MRG_MyISAM UNION=(t1,t2)
drop table t3,t2,t1;
create table t1 (a int not null) type=merge;
select * from t1;
a
drop table t1;
drop table if exists t3, t2, t1;
create table t1 (a int not null, b int not null, key(a,b));
create table t2 (a int not null, b int not null, key(a,b));
create table t3 (a int not null, b int not null, key(a,b)) TYPE=MERGE UNION=(t1,t2);
insert into t1 values (1,2),(2,1),(0,0),(4,4),(5,5),(6,6);
insert into t2 values (1,1),(2,2),(0,0),(4,4),(5,5),(6,6);
flush tables;
select * from t3 where a=1 order by b limit 2;
a b
1 1
1 2
drop table t3,t1,t2;

View File

@ -1,22 +1,40 @@
drop table if exists t1,t2,t3;
create table t1(id1 int not null auto_increment primary key, t char(12));
create table t2(id2 int not null, t char(12));
create table t3(id3 int not null, t char(12), index(id3));
delete t1.*, t2.*, t3.* from t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3 and t1.id1 > 9500;
check table t1, t2, t3;
Table Op Msg_type Msg_text
test.t1 check status OK
test.t2 check status OK
test.t3 check status OK
select count(*) from t1 where id1 > 9500;
count(*)
0
select count(*) from t2 where id2 > 9500;
count(*)
0
select count(*) from t3 where id3 > 9500;
count(*)
0
delete t1, t2, t3 from t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3 and t1.id1 > 500;
select count(*) from t1 where id1 > 500;
count(*)
0
select count(*) from t2 where id2 > 500;
count(*)
0
select count(*) from t3 where id3 > 500;
count(*)
0
delete t1, t2, t3 from t1,t2,t3 where t1.id1 = t2.id2 and t2.id2 = t3.id3 and t1.id1 > 0;
select count(*) from t1 where id1;
count(*)
0
select count(*) from t2 where id2;
count(*)
0
select count(*) from t3 where id3;
count(*)
0
drop table t1,t2,t3;

View File

@ -1,12 +1,33 @@
drop table if exists t1;
CREATE TABLE t1 (
STRING_DATA char(255) default NULL,
KEY STRING_DATA (STRING_DATA)
) TYPE=MyISAM;
INSERT INTO t1 VALUES ('AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA');
INSERT INTO t1 VALUES ('DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD');
INSERT INTO t1 VALUES ('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF');
INSERT INTO t1 VALUES ('FGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG');
INSERT INTO t1 VALUES ('HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH');
INSERT INTO t1 VALUES ('WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW');
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;
create table t1 (a tinyint not null auto_increment, b blob not null, primary key (a));
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
repair table t1;
Table Op Msg_type Msg_text
test.t1 repair status OK
delete from t1 where (a & 1);
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
repair table t1;
Table Op Msg_type Msg_text
test.t1 repair status OK
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;

View File

@ -1,25 +1,42 @@
select null,\N,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull(null,"TRUE"),ifnull("TRUE","ERROR"),1/0 is null,1 is not null;
NULL NULL isnull(null) isnull(1/0) isnull(1/0 = null) ifnull(null,1) ifnull(null,"TRUE") ifnull("TRUE","ERROR") 1/0 is null 1 is not null
NULL NULL 1 1 1 1 TRUE TRUE 1 1
select 1 | NULL,1 & NULL,1+NULL,1-NULL;
1 | NULL 1 & NULL 1+NULL 1-NULL
NULL NULL NULL NULL
select NULL=NULL,NULL<>NULL,IFNULL(NULL,1.1)+0,IFNULL(NULL,1) | 0;
NULL=NULL NULL<>NULL IFNULL(NULL,1.1)+0 IFNULL(NULL,1) | 0
NULL NULL 1.1 1
select strcmp("a",NULL),(1<NULL)+0.0,NULL regexp "a",null like "a%","a%" like null;
strcmp("a",NULL) (1<NULL)+0.0 NULL regexp "a" null like "a%" "a%" like null
NULL NULL NULL NULL NULL
select concat("a",NULL),replace(NULL,"a","b"),replace("string","i",NULL),replace("string",NULL,"i"),insert("abc",1,1,NULL),left(NULL,1);
concat("a",NULL) replace(NULL,"a","b") replace("string","i",NULL) replace("string",NULL,"i") insert("abc",1,1,NULL) left(NULL,1)
NULL NULL NULL NULL NULL NULL
select repeat("a",0),repeat("ab",5+5),repeat("ab",-1),reverse(NULL);
repeat("a",0) repeat("ab",5+5) repeat("ab",-1) reverse(NULL)
abababababababababab NULL
select field(NULL,"a","b","c");
field(NULL,"a","b","c")
0
select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between NULL and 3, 2 between 1 AND null;
2 between null and 1 2 between 3 AND NULL NULL between 1 and 2 2 between NULL and 3 2 between 1 AND null
0 0 NULL NULL NULL
SELECT NULL AND NULL, 1 AND NULL, NULL AND 1, NULL OR NULL, 0 OR NULL, NULL OR 0;
NULL AND NULL 1 AND NULL NULL AND 1 NULL OR NULL 0 OR NULL NULL OR 0
NULL NULL NULL NULL NULL NULL
SELECT (NULL OR NULL) IS NULL;
(NULL OR NULL) IS NULL
1
select NULL AND 0, 0 and NULL;
NULL AND 0 0 and NULL
NULL 0
select inet_ntoa(null),inet_aton(null),inet_aton("122.256"),inet_aton("122.226."),inet_aton("");
inet_ntoa(null) inet_aton(null) inet_aton("122.256") inet_aton("122.226.") inet_aton("")
NULL NULL NULL NULL NULL
drop table if exists t1;
create table t1 (x int);
insert into t1 values (null);
select * from t1 where x != 0;
x
drop table t1;

View File

@ -1,101 +1,164 @@
drop table if exists t1;
create table t1 (a int, b int not null,unique key (a,b),index(b)) type=myisam;
insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6);
explain select * from t1 where a is null;
table type possible_keys key key_len ref rows Extra
t1 ref a a 5 const 3 where used; Using index
explain select * from t1 where a is null and b = 2;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 9 const,const 1 where used; Using index
explain select * from t1 where a is null and b = 7;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 9 const,const 1 where used; Using index
explain select * from t1 where a=2 and b = 2;
table type possible_keys key key_len ref rows Extra
t1 const a,b a 9 const,const 1
explain select * from t1 where a<=>b limit 2;
table type possible_keys key key_len ref rows Extra
t1 index NULL a 9 NULL 12 where used; Using index
explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
table type possible_keys key key_len ref rows Extra
t1 range a,b a 9 NULL 3 where used; Using index
explain select * from t1 where (a is null or a = 7) and b=7;
table type possible_keys key key_len ref rows Extra
t1 ref a,b b 4 const 2 where used
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 5 const 3 where used; Using index
explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
table type possible_keys key key_len ref rows Extra
t1 range a,b a 9 NULL 2 where used; Using index
explain select * from t1 where a > 1 and a < 3 limit 1;
table type possible_keys key key_len ref rows Extra
t1 range a a 5 NULL 1 where used; Using index
explain select * from t1 where a > 8 and a < 9;
table type possible_keys key key_len ref rows Extra
t1 range a a 5 NULL 1 where used; Using index
select * from t1 where a is null;
a b
NULL 7
NULL 9
NULL 9
select * from t1 where a is null and b = 7;
a b
NULL 7
select * from t1 where a<=>b limit 2;
a b
1 1
2 2
select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
a b
1 1
2 2
select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
a b
NULL 9
NULL 9
select * from t1 where (a is null or a = 7) and b=7;
a b
NULL 7
7 7
select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
a b
NULL 7
NULL 9
NULL 9
alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10));
explain select * from t1 where a is null and b = 2;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 5 const 3 where used
explain select * from t1 where a is null and b = 2 and c=0;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 5 const 3 where used
explain select * from t1 where a is null and b = 7 and c=0;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 5 const 3 where used
explain select * from t1 where a=2 and b = 2;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 5 const 1 where used
explain select * from t1 where a<=>b limit 2;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 12 where used
explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 and c=0 limit 3;
table type possible_keys key key_len ref rows Extra
t1 range a,b a 5 NULL 5 where used
explain select * from t1 where (a is null or a = 7) and b=7 and c=0;
table type possible_keys key key_len ref rows Extra
t1 range a,b a 5 NULL 4 where used
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 5 const 3 where used
explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
table type possible_keys key key_len ref rows Extra
t1 ref a,b a 5 const 3 where used
explain select * from t1 where a > 1 and a < 3 limit 1;
table type possible_keys key key_len ref rows Extra
t1 range a a 5 NULL 1 where used
explain select * from t1 where a is null and b=7 or a > 1 and a < 3 limit 1;
table type possible_keys key key_len ref rows Extra
t1 range a,b a 5 NULL 4 where used
explain select * from t1 where a > 8 and a < 9;
table type possible_keys key key_len ref rows Extra
t1 range a a 5 NULL 1 where used
explain select * from t1 where b like "6%";
table type possible_keys key key_len ref rows Extra
t1 range b b 12 NULL 1 where used
select * from t1 where a is null;
a b c
NULL 7 0
NULL 9 0
NULL 9 0
select * from t1 where a is null and b = 7 and c=0;
a b c
NULL 7 0
select * from t1 where a<=>b limit 2;
a b c
1 1 0
2 2 0
select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
a b c
1 1 0
2 2 0
select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
a b c
NULL 9 0
NULL 9 0
select * from t1 where (a is null or a = 7) and b=7 and c=0;
a b c
NULL 7 0
7 7 0
select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
a b c
NULL 7 0
NULL 9 0
NULL 9 0
select * from t1 where b like "6%";
a b c
6 6 0
drop table t1;
DROP TABLE IF EXISTS t1,t2;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL auto_increment,
uniq_id int(10) unsigned default NULL,
PRIMARY KEY (id),
UNIQUE KEY idx1 (uniq_id)
) TYPE=MyISAM;
CREATE TABLE t2 (
id int(10) unsigned NOT NULL auto_increment,
uniq_id int(10) unsigned default NULL,
PRIMARY KEY (id)
) TYPE=MyISAM;
INSERT INTO t1 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
INSERT INTO t2 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
explain select id from t1 where uniq_id is null;
table type possible_keys key key_len ref rows Extra
t1 ref idx1 idx1 5 const 1 where used
explain select id from t1 where uniq_id =1;
table type possible_keys key key_len ref rows Extra
t1 const idx1 idx1 5 const 1
UPDATE t1 SET id=id+100 where uniq_id is null;
UPDATE t2 SET id=id+100 where uniq_id is null;
select id from t1 where uniq_id is null;
id
101
102
@ -103,6 +166,7 @@ id
106
109
110
select id from t2 where uniq_id is null;
id
101
102
@ -110,13 +174,18 @@ id
106
109
110
DELETE FROM t1 WHERE uniq_id IS NULL;
DELETE FROM t2 WHERE uniq_id IS NULL;
SELECT * FROM t1 ORDER BY uniq_id, id;
id uniq_id
3 1
4 2
7 3
8 4
SELECT * FROM t2 ORDER BY uniq_id, id;
id uniq_id
3 1
4 2
7 3
8 4
DROP table t1,t2;

View File

@ -1,7 +1,15 @@
select {fn length("hello")}, { date "1997-10-20" };
{fn length("hello")} 1997-10-20
5 1997-10-20
create table t1 (a int not null auto_increment,b int not null,primary key (a,b));
insert into t1 SET A=NULL,B=1;
insert into t1 SET a=null,b=2;
select * from t1 where a is null and b=2;
a b
2 2
select * from t1 where a is null;
a b
explain select * from t1 where b is null;
Comment
Impossible WHERE noticed after reading const tables
drop table t1;

View File

@ -1,16 +1,2 @@
SHOW STATUS LIKE 'SSL%';
Variable_name Value
SSL_CTX_sess_accept 0
SSL_CTX_sess_accept_good 0
SSL_CTX_sess_accept_renegotiate 0
SSL_CTX_sess_cb_hits 0
SSL_CTX_sess_number 0
SSL_CTX_get_session_cache_mode SERVER
SSL_CTX_sess_get_cache_size 128
SSL_CTX_get_verify_mode 7
SSL_CTX_get_verify_depth 4294967295
SSL_get_verify_mode 0
SSL_get_verify_depth 0
SSL_session_reused 0
SSL_get_version
SSL_get_cipher
SSL_get_default_timeout 0

View File

@ -1,16 +1,2 @@
SHOW STATUS LIKE 'SSL%';
Variable_name Value
SSL_CTX_sess_accept 0
SSL_CTX_sess_accept_good 0
SSL_CTX_sess_accept_renegotiate 0
SSL_CTX_sess_cb_hits 0
SSL_CTX_sess_number 0
SSL_CTX_get_session_cache_mode SERVER
SSL_CTX_sess_get_cache_size 128
SSL_CTX_get_verify_mode 7
SSL_CTX_get_verify_depth 4294967295
SSL_get_verify_mode 0
SSL_get_verify_depth 0
SSL_session_reused 0
SSL_get_version
SSL_get_cipher
SSL_get_default_timeout 0

View File

@ -1,3 +1,39 @@
drop table if exists t1,t2,t3;
CREATE TABLE t1 (
id int(6) DEFAULT '0' NOT NULL,
idservice int(5),
clee char(20) NOT NULL,
flag char(1),
KEY id (id),
PRIMARY KEY (clee)
);
INSERT INTO t1 VALUES (2,4,'6067169d','Y');
INSERT INTO t1 VALUES (2,5,'606716d1','Y');
INSERT INTO t1 VALUES (2,1,'606717c1','Y');
INSERT INTO t1 VALUES (3,1,'6067178d','Y');
INSERT INTO t1 VALUES (2,6,'60671515','Y');
INSERT INTO t1 VALUES (2,7,'60671569','Y');
INSERT INTO t1 VALUES (2,3,'dd','Y');
CREATE TABLE t2 (
id int(6) DEFAULT '0' NOT NULL auto_increment,
description varchar(40) NOT NULL,
idform varchar(40),
ordre int(6) unsigned DEFAULT '0' NOT NULL,
image varchar(60),
PRIMARY KEY (id),
KEY id (id,ordre)
);
INSERT INTO t2 VALUES (1,'Emettre un appel d''offres','en_construction.html',10,'emettre.gif');
INSERT INTO t2 VALUES (2,'Emettre des soumissions','en_construction.html',20,'emettre.gif');
INSERT INTO t2 VALUES (7,'Liste des t2','t2_liste_form.phtml',51060,'link.gif');
INSERT INTO t2 VALUES (8,'Consulter les soumissions','consulter_soumissions.phtml',200,'link.gif');
INSERT INTO t2 VALUES (9,'Ajouter un type de materiel','typeMateriel_ajoute_form.phtml',51000,'link.gif');
INSERT INTO t2 VALUES (10,'Lister/modifier un type de materiel','typeMateriel_liste_form.phtml',51010,'link.gif');
INSERT INTO t2 VALUES (3,'Créer une fiche de client','clients_ajoute_form.phtml',40000,'link.gif');
INSERT INTO t2 VALUES (4,'Modifier des clients','en_construction.html',40010,'link.gif');
INSERT INTO t2 VALUES (5,'Effacer des clients','en_construction.html',40020,'link.gif');
INSERT INTO t2 VALUES (6,'Ajouter un service','t2_ajoute_form.phtml',51050,'link.gif');
select t1.id,t1.idservice,t2.ordre,t2.description from t1, t2 where t1.id = 2 and t1.idservice = t2.id order by t2.ordre;
id idservice ordre description
2 1 10 Emettre un appel d'offres
2 3 40000 Créer une fiche de client
@ -5,34 +41,53 @@ id idservice ordre description
2 5 40020 Effacer des clients
2 6 51050 Ajouter un service
2 7 51060 Liste des t2
drop table t1,t2;
create table t1 (first char(10),last char(10));
insert into t1 values ("Michael","Widenius");
insert into t1 values ("Allan","Larsson");
insert into t1 values ("David","Axmark");
select concat(first," ",last) as name from t1 order by name;
name
Allan Larsson
David Axmark
Michael Widenius
select concat(last," ",first) as name from t1 order by name;
name
Axmark David
Larsson Allan
Widenius Michael
drop table t1;
create table t1 (i int);
insert into t1 values(1),(2),(1),(2),(1),(2),(3);
select distinct i from t1;
i
1
2
3
select distinct i from t1 order by rand(5);
i
1
3
2
select distinct i from t1 order by i desc;
i
3
2
1
select distinct i from t1 order by 1-i;
i
3
2
1
select distinct i from t1 order by mod(i,2),i;
i
2
1
3
drop table t1;
create table t1 (id int not null,col1 int not null,col2 int not null,index(col1));
insert into t1 values(1,2,2),(2,2,1),(3,1,2),(4,1,1),(5,1,4),(6,2,3),(7,3,1),(8,2,4);
select * from t1 order by col1,col2;
id col1 col2
4 1 1
3 1 2
@ -42,6 +97,7 @@ id col1 col2
6 2 3
8 2 4
7 3 1
select col1 from t1 order by id;
col1
2
2
@ -51,6 +107,7 @@ col1
2
3
2
select col1 as id from t1 order by t1.id;
id
1
1
@ -60,6 +117,7 @@ id
2
2
3
select concat(col1) as id from t1 order by t1.id;
id
2
2
@ -69,21 +127,75 @@ id
2
3
2
drop table t1;
CREATE TABLE t1 (id int auto_increment primary key,aika varchar(40),aikakentta timestamp);
insert into t1 (aika) values ('Keskiviikko');
insert into t1 (aika) values ('Tiistai');
insert into t1 (aika) values ('Maanantai');
insert into t1 (aika) values ('Sunnuntai');
SELECT FIELD(SUBSTRING(t1.aika,1,2),'Ma','Ti','Ke','To','Pe','La','Su') AS test FROM t1 ORDER by test;
test
1
2
3
7
drop table t1;
CREATE TABLE t1
(
a int unsigned NOT NULL,
b int unsigned NOT NULL,
c int unsigned NOT NULL,
UNIQUE(a),
INDEX(b),
INDEX(c)
);
CREATE TABLE t2
(
c int unsigned NOT NULL,
i int unsigned NOT NULL,
INDEX(c)
);
CREATE TABLE t3
(
c int unsigned NOT NULL,
v varchar(64),
INDEX(c)
);
INSERT INTO t1 VALUES (1,1,1);
INSERT INTO t1 VALUES (2,1,2);
INSERT INTO t1 VALUES (3,2,1);
INSERT INTO t1 VALUES (4,2,2);
INSERT INTO t2 VALUES (1,50);
INSERT INTO t2 VALUES (2,25);
INSERT INTO t3 VALUES (1,'123 Park Place');
INSERT INTO t3 VALUES (2,'453 Boardwalk');
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
LEFT JOIN t2 USING(c)
LEFT JOIN t3 ON t3.c = t1.c;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
2 1 25
3 2 123 Park Place
4 2 453 Boardwalk
SELECT a,b,if(b = 1,i,if(b = 2,v,''))
FROM t1
LEFT JOIN t2 USING(c)
LEFT JOIN t3 ON t3.c = t1.c
ORDER BY a;
a b if(b = 1,i,if(b = 2,v,''))
1 1 50
2 1 25
3 2 123 Park Place
4 2 453 Boardwalk
drop table t1,t2,t3;
create table t1 (ID int not null primary key, TransactionID int not null);
insert into t1 (ID, TransactionID) values (1, 87), (2, 89), (3, 92), (4, 94), (5, 486), (6, 490), (7, 753), (9, 828), (10, 832), (11, 834), (12, 840);
create table t2 (ID int not null primary key, GroupID int not null);
insert into t2 (ID, GroupID) values (87, 87), (89, 89), (92, 92), (94, 94), (486, 486), (490, 490),(753, 753), (828, 828), (832, 832), (834, 834), (840, 840);
create table t3 (ID int not null primary key, DateOfAction date not null);
insert into t3 (ID, DateOfAction) values (87, '1999-07-19'), (89, '1999-07-19'), (92, '1999-07-19'), (94, '1999-07-19'), (486, '1999-07-18'), (490, '2000-03-27'), (753, '2000-03-28'), (828, '1999-07-27'), (832, '1999-07-27'),(834, '1999-07-27'), (840, '1999-07-27');
select t3.DateOfAction, t1.TransactionID from t1 join t2 join t3 where t2.ID = t1.TransactionID and t3.ID = t2.GroupID order by t3.DateOfAction, t1.TransactionID;
DateOfAction TransactionID
1999-07-18 486
1999-07-19 87
@ -96,6 +208,7 @@ DateOfAction TransactionID
1999-07-27 840
2000-03-27 490
2000-03-28 753
select t3.DateOfAction, t1.TransactionID from t1 join t2 join t3 where t2.ID = t1.TransactionID and t3.ID = t2.GroupID order by t1.TransactionID,t3.DateOfAction;
DateOfAction TransactionID
1999-07-19 87
1999-07-19 89
@ -108,15 +221,57 @@ DateOfAction TransactionID
1999-07-27 832
1999-07-27 834
1999-07-27 840
drop table t1,t2,t3;
drop table if exists t1;
CREATE TABLE t1 (
member_id int(11) NOT NULL auto_increment,
inschrijf_datum varchar(20) NOT NULL default '',
lastchange_datum varchar(20) NOT NULL default '',
nickname varchar(20) NOT NULL default '',
password varchar(8) NOT NULL default '',
voornaam varchar(30) NOT NULL default '',
tussenvoegsels varchar(10) NOT NULL default '',
achternaam varchar(50) NOT NULL default '',
straat varchar(100) NOT NULL default '',
postcode varchar(10) NOT NULL default '',
wijk varchar(40) NOT NULL default '',
plaats varchar(50) NOT NULL default '',
telefoon varchar(10) NOT NULL default '',
geboortedatum date NOT NULL default '0000-00-00',
geslacht varchar(5) NOT NULL default '',
email varchar(80) NOT NULL default '',
uin varchar(15) NOT NULL default '',
homepage varchar(100) NOT NULL default '',
internet varchar(15) NOT NULL default '',
scherk varchar(30) NOT NULL default '',
favo_boek varchar(50) NOT NULL default '',
favo_tijdschrift varchar(50) NOT NULL default '',
favo_tv varchar(50) NOT NULL default '',
favo_eten varchar(50) NOT NULL default '',
favo_muziek varchar(30) NOT NULL default '',
info text NOT NULL,
ipnr varchar(30) NOT NULL default '',
PRIMARY KEY (member_id)
) TYPE=MyISAM PACK_KEYS=1;
insert into t1 (member_id) values (1),(2),(3);
select member_id, nickname, voornaam FROM t1
ORDER by lastchange_datum DESC LIMIT 2;
member_id nickname voornaam
1
2
drop table t1;
create table t1 (a int not null, b int, c varchar(10), key (a, b, c));
insert into t1 values (1, NULL, NULL), (1, NULL, 'b'), (1, 1, NULL), (1, 1, 'b'), (1, 1, 'b'), (2, 1, 'a'), (2, 1, 'b'), (2, 2, 'a'), (2, 2, 'b'), (2, 3, 'c'),(1,3,'b');
explain select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 20 NULL 2 where used; Using index
select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
a b c
1 NULL b
explain select * from t1 where a >= 1 and a < 3 order by a desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 4 NULL 10 where used; Using index
select * from t1 where a >= 1 and a < 3 order by a desc;
a b c
2 3 c
2 2 b
@ -129,8 +284,10 @@ a b c
1 1 NULL
1 NULL b
1 NULL NULL
explain select * from t1 where a = 1 order by a desc, b desc;
table type possible_keys key key_len ref rows Extra
t1 ref a a 4 const 5 where used; Using index; Using filesort
select * from t1 where a = 1 order by a desc, b desc;
a b c
1 3 b
1 1 NULL
@ -138,25 +295,37 @@ a b c
1 1 b
1 NULL NULL
1 NULL b
explain select * from t1 where a = 1 and b is null order by a desc, b desc;
table type possible_keys key key_len ref rows Extra
t1 ref a a 9 const,const 2 where used; Using index; Using filesort
select * from t1 where a = 1 and b is null order by a desc, b desc;
a b c
1 NULL NULL
1 NULL b
explain select * from t1 where a >= 1 and a < 3 and b >0 order by a desc,b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 9 NULL 8 where used; Using index; Using filesort
explain select * from t1 where a = 2 and b >0 order by a desc,b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 9 NULL 5 where used; Using index
explain select * from t1 where a = 2 and b is null order by a desc,b desc;
table type possible_keys key key_len ref rows Extra
t1 ref a a 9 const,const 1 where used; Using index; Using filesort
explain select * from t1 where a = 2 and (b is null or b > 0) order by a
desc,b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 9 NULL 6 where used; Using index
explain select * from t1 where a = 2 and b > 0 order by a desc,b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 9 NULL 5 where used; Using index
explain select * from t1 where a = 2 and b < 2 order by a desc,b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 9 NULL 2 where used; Using index; Using filesort
alter table t1 modify b int not null, modify c varchar(10) not null;
explain select * from t1 order by a, b, c;
table type possible_keys key key_len ref rows Extra
t1 index NULL a 18 NULL 11 Using index
select * from t1 order by a, b, c;
a b c
1 0
1 0 b
@ -169,8 +338,10 @@ a b c
2 2 a
2 2 b
2 3 c
explain select * from t1 order by a desc, b desc, c desc;
table type possible_keys key key_len ref rows Extra
t1 index NULL a 18 NULL 11 Using index
select * from t1 order by a desc, b desc, c desc;
a b c
2 3 c
2 2 b
@ -183,21 +354,27 @@ a b c
1 1
1 0 b
1 0
explain select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 18 NULL 3 where used; Using index
select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
a b c
1 1 b
1 1 b
explain select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 4 NULL 6 where used; Using index
select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
a b c
1 1 b
1 1 b
1 1
1 0 b
1 0
select count(*) from t1 where a < 5 and b > 0;
count(*)
9
select * from t1 where a < 5 and b > 0 order by a desc,b desc;
a b c
2 3 c
2 2 b
@ -208,8 +385,10 @@ a b c
1 1 b
1 1 b
1 1
explain select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 8 NULL 10 where used; Using index
select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
a b c
2 1 b
2 1 a
@ -218,8 +397,10 @@ a b c
1 1
1 0 b
1 0
explain select * from t1 where a between 0 and 1 order by a desc, b desc;
table type possible_keys key key_len ref rows Extra
t1 range a a 4 NULL 5 where used; Using index
select * from t1 where a between 0 and 1 order by a desc, b desc;
a b c
1 3 b
1 1 b
@ -227,6 +408,31 @@ a b c
1 1
1 0 b
1 0
drop table t1;
CREATE TABLE t1 (
gid int(10) unsigned NOT NULL auto_increment,
cid smallint(5) unsigned NOT NULL default '0',
PRIMARY KEY (gid),
KEY component_id (cid)
) TYPE=MyISAM;
INSERT INTO t1 VALUES (103853,108),(103867,108),(103962,108),(104505,108),(104619,108),(104620,108);
ALTER TABLE t1 add skr int(10) not null;
CREATE TABLE t2 (
gid int(10) unsigned NOT NULL default '0',
uid smallint(5) unsigned NOT NULL default '1',
sid tinyint(3) unsigned NOT NULL default '1',
PRIMARY KEY (gid),
KEY uid (uid),
KEY status_id (sid)
) TYPE=MyISAM;
INSERT INTO t2 VALUES (103853,250,5),(103867,27,5),(103962,27,5),(104505,117,5),(104619,75,5),(104620,15,5);
CREATE TABLE t3 (
uid smallint(6) NOT NULL auto_increment,
PRIMARY KEY (uid)
) TYPE=MyISAM;
INSERT INTO t3 VALUES (1),(15),(27),(75),(117),(250);
ALTER TABLE t3 add skr int(10) not null;
select t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
gid sid uid
104620 5 15
103867 5 27
@ -234,6 +440,7 @@ gid sid uid
104619 5 75
104505 5 117
103853 5 250
select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
gid sid uid
104620 5 15
103867 5 27
@ -241,20 +448,26 @@ gid sid uid
104619 5 75
104505 5 117
103853 5 250
EXPLAIN select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and t2.uid = t3.uid order by t1.gid, t3.uid;
table type possible_keys key key_len ref rows Extra
t1 index PRIMARY PRIMARY 4 NULL 6 Using index
t2 eq_ref PRIMARY,uid PRIMARY 4 t1.gid 1
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 where used; Using index
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t1.gid,t3.skr;
table type possible_keys key key_len ref rows Extra
t1 index PRIMARY PRIMARY 4 NULL 6 Using index
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 where used
EXPLAIN SELECT t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
table type possible_keys key key_len ref rows Extra
t1 index PRIMARY PRIMARY 4 NULL 6 Using index; Using temporary; Using filesort
t2 eq_ref PRIMARY,uid PRIMARY 4 t1.gid 1
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 where used; Using index
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t3.skr,t1.gid;
table type possible_keys key key_len ref rows Extra
t1 index PRIMARY PRIMARY 4 NULL 6 Using index; Using temporary; Using filesort
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 where used
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.skr = t3.uid order by t1.gid,t3.skr;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort
t3 eq_ref PRIMARY PRIMARY 2 t1.skr 1 where used
drop table t1,t2,t3;

View File

@ -1,2 +1,10 @@
drop table if exists t1,t2;
CREATE TABLE `t1` (
`id` int(11) NOT NULL default '0',
`id2` int(11) NOT NULL default '0',
`id3` int(11) NOT NULL default '0');
create table t2 select id2 from t1 order by id3;
select count(*) from t2;
count(*)
4000
drop table t1,t2;

View File

@ -0,0 +1,2 @@
drop database AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA;
Incorrect database name 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'

View File

@ -1,8 +1,196 @@
DROP TABLE IF EXISTS t1,t2;
CREATE TABLE t1 (
id int unsigned not null auto_increment primary key,
c char(255) not null
) RAID_TYPE=STRIPED RAID_CHUNKS=2 RAID_CHUNKSIZE=123;
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
select count(*) from t1;
count(*)
450
ALTER TABLE t1 ADD COLUMN x INT UNSIGNED NOT NULL;
ALTER TABLE t1 ADD KEY c (c);
ALTER TABLE t1 DROP KEY c;
ALTER TABLE t1 DROP COLUMN x;
ALTER TABLE t1 RENAME t2;
select count(*) from t2;
count(*)
450
DROP TABLE t2;
/* variable rows */
DROP TABLE IF EXISTS t2;
CREATE TABLE t1 (
id int unsigned not null auto_increment primary key,
c varchar(255) not null
) RAID_TYPE=STRIPED RAID_CHUNKS=5 RAID_CHUNKSIZE=121;
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
INSERT INTO t1 VALUES
(NULL,'1'),(NULL,'a'),(NULL,'a'),(NULL,'a'),(NULL,'p'),(NULL,'a'),
(NULL,'2'),(NULL,'b'),(NULL,'a'),(NULL,'a'),(NULL,'q'),(NULL,'a'),
(NULL,'3'),(NULL,'c'),(NULL,'a'),(NULL,'a'),(NULL,'r'),(NULL,'a'),
(NULL,'4'),(NULL,'d'),(NULL,'a'),(NULL,'a'),(NULL,'s'),(NULL,'a'),
(NULL,'5'),(NULL,'e'),(NULL,'a'),(NULL,'a'),(NULL,'t'),(NULL,'a'),
(NULL,'6'),(NULL,'f'),(NULL,'a'),(NULL,'a'),(NULL,'u'),(NULL,'a'),
(NULL,'7'),(NULL,'g'),(NULL,'a'),(NULL,'a'),(NULL,'v'),(NULL,'a'),
(NULL,'8'),(NULL,'h'),(NULL,'a'),(NULL,'a'),(NULL,'w'),(NULL,'a'),
(NULL,'9'),(NULL,'i'),(NULL,'a'),(NULL,'a'),(NULL,'x'),(NULL,'a'),
(NULL,'0'),(NULL,'j'),(NULL,'a'),(NULL,'a'),(NULL,'y'),(NULL,'a'),
(NULL,'1'),(NULL,'k'),(NULL,'a'),(NULL,'a'),(NULL,'z'),(NULL,'a'),
(NULL,'2'),(NULL,'l'),(NULL,'a'),(NULL,'a'),(NULL,'/'),(NULL,'a'),
(NULL,'3'),(NULL,'m'),(NULL,'a'),(NULL,'a'),(NULL,'*'),(NULL,'a'),
(NULL,'4'),(NULL,'n'),(NULL,'a'),(NULL,'a'),(NULL,'+'),(NULL,'a'),
(NULL,'5'),(NULL,'o'),(NULL,'a'),(NULL,'a'),(NULL,'?'),(NULL,'a');
select count(*) from t1;
count(*)
450
ALTER TABLE t1 ADD COLUMN x INT UNSIGNED NOT NULL;
ALTER TABLE t1 ADD KEY c (c);
ALTER TABLE t1 DROP KEY c;
ALTER TABLE t1 DROP COLUMN x;
ALTER TABLE t1 RENAME t2;
ALTER TABLE t2 CHANGE COLUMN c c VARCHAR(251) NOT NULL;
select count(*) from t2;
count(*)
450
DROP TABLE t2;

View File

@ -1,3 +1,12 @@
drop table if exists t1;
CREATE TABLE t1 (
event_date date DEFAULT '0000-00-00' NOT NULL,
type int(11) DEFAULT '0' NOT NULL,
event_id int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (event_date,type,event_id)
);
INSERT INTO t1 VALUES ('1999-07-10',100100,24),('1999-07-11',100100,25),('1999-07-13',100600,0),('1999-07-13',100600,4),('1999-07-13',100600,26),('1999-07-14',100600,10),('1999-07-15',100600,16),('1999-07-15',100800,45),('1999-07-15',101000,47),('1999-07-16',100800,46),('1999-07-20',100600,5),('1999-07-20',100600,27),('1999-07-21',100600,11),('1999-07-22',100600,17),('1999-07-23',100100,39),('1999-07-24',100100,39),('1999-07-24',100500,40),('1999-07-25',100100,39),('1999-07-27',100600,1),('1999-07-27',100600,6),('1999-07-27',100600,28),('1999-07-28',100600,12),('1999-07-29',100500,41),('1999-07-29',100600,18),('1999-07-30',100500,41),('1999-07-31',100500,41),('1999-08-01',100700,34),('1999-08-03',100600,7),('1999-08-03',100600,29),('1999-08-04',100600,13),('1999-08-05',100500,42),('1999-08-05',100600,19),('1999-08-06',100500,42),('1999-08-07',100500,42),('1999-08-08',100500,42),('1999-08-10',100600,2),('1999-08-10',100600,9),('1999-08-10',100600,30),('1999-08-11',100600,14),('1999-08-12',100600,20),('1999-08-17',100500,8),('1999-08-17',100600,31),('1999-08-18',100600,15),('1999-08-19',100600,22),('1999-08-24',100600,3),('1999-08-24',100600,32),('1999-08-27',100500,43),('1999-08-31',100600,33),('1999-09-17',100100,37),('1999-09-18',100100,37),('1999-09-19',100100,37),('2000-12-18',100700,38);
select event_date,type,event_id from t1 WHERE event_date >= "1999-07-01" AND event_date < "1999-07-15" AND (type=100600 OR type=100100) ORDER BY event_date;
event_date type event_id
1999-07-10 100100 24
1999-07-11 100100 25
@ -5,8 +14,10 @@ event_date type event_id
1999-07-13 100600 4
1999-07-13 100600 26
1999-07-14 100600 10
explain select event_date,type,event_id from t1 WHERE type = 100601 and event_date >= "1999-07-01" AND event_date < "1999-07-15" AND (type=100600 OR type=100100) ORDER BY event_date;
Comment
Impossible WHERE
select event_date,type,event_id from t1 WHERE event_date >= "1999-07-01" AND event_date <= "1999-07-15" AND (type=100600 OR type=100100) or event_date >= "1999-07-01" AND event_date <= "1999-07-15" AND type=100099;
event_date type event_id
1999-07-10 100100 24
1999-07-11 100100 25
@ -15,6 +26,45 @@ event_date type event_id
1999-07-13 100600 26
1999-07-14 100600 10
1999-07-15 100600 16
drop table t1;
CREATE TABLE t1 (
PAPER_ID smallint(6) DEFAULT '0' NOT NULL,
YEAR smallint(6) DEFAULT '0' NOT NULL,
ISSUE smallint(6) DEFAULT '0' NOT NULL,
CLOSED tinyint(4) DEFAULT '0' NOT NULL,
ISS_DATE date DEFAULT '0000-00-00' NOT NULL,
PRIMARY KEY (PAPER_ID,YEAR,ISSUE)
);
INSERT INTO t1 VALUES (3,1999,34,0,'1999-07-12');
INSERT INTO t1 VALUES (1,1999,111,0,'1999-03-23');
INSERT INTO t1 VALUES (1,1999,222,0,'1999-03-23');
INSERT INTO t1 VALUES (3,1999,33,0,'1999-07-12');
INSERT INTO t1 VALUES (3,1999,32,0,'1999-07-12');
INSERT INTO t1 VALUES (3,1999,31,0,'1999-07-12');
INSERT INTO t1 VALUES (3,1999,30,0,'1999-07-12');
INSERT INTO t1 VALUES (3,1999,29,0,'1999-07-12');
INSERT INTO t1 VALUES (3,1999,28,0,'1999-07-12');
INSERT INTO t1 VALUES (1,1999,40,1,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,41,1,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,42,1,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,46,1,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,47,1,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,48,1,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,49,1,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,50,0,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,51,0,'1999-05-01');
INSERT INTO t1 VALUES (1,1999,200,0,'1999-06-28');
INSERT INTO t1 VALUES (1,1999,52,0,'1999-06-28');
INSERT INTO t1 VALUES (1,1999,53,0,'1999-06-28');
INSERT INTO t1 VALUES (1,1999,54,0,'1999-06-28');
INSERT INTO t1 VALUES (1,1999,55,0,'1999-06-28');
INSERT INTO t1 VALUES (1,1999,56,0,'1999-07-01');
INSERT INTO t1 VALUES (1,1999,57,0,'1999-07-01');
INSERT INTO t1 VALUES (1,1999,58,0,'1999-07-01');
INSERT INTO t1 VALUES (1,1999,59,0,'1999-07-01');
INSERT INTO t1 VALUES (1,1999,60,0,'1999-07-01');
INSERT INTO t1 VALUES (3,1999,35,0,'1999-07-12');
select YEAR,ISSUE from t1 where PAPER_ID=3 and (YEAR>1999 or (YEAR=1999 and ISSUE>28)) order by YEAR,ISSUE;
YEAR ISSUE
1999 29
1999 30
@ -23,10 +73,23 @@ YEAR ISSUE
1999 33
1999 34
1999 35
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
repair table t1;
Table Op Msg_type Msg_text
test.t1 repair status OK
drop table t1;
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
parent_id int(11) DEFAULT '0' NOT NULL,
level tinyint(4) DEFAULT '0' NOT NULL,
PRIMARY KEY (id),
KEY parent_id (parent_id),
KEY level (level)
);
INSERT INTO t1 VALUES (1,0,0),(3,1,1),(4,1,1),(8,2,2),(9,2,2),(17,3,2),(22,4,2),(24,4,2),(28,5,2),(29,5,2),(30,5,2),(31,6,2),(32,6,2),(33,6,2),(203,7,2),(202,7,2),(20,3,2),(157,0,0),(193,5,2),(40,7,2),(2,1,1),(15,2,2),(6,1,1),(34,6,2),(35,6,2),(16,3,2),(7,1,1),(36,7,2),(18,3,2),(26,5,2),(27,5,2),(183,4,2),(38,7,2),(25,5,2),(37,7,2),(21,4,2),(19,3,2),(5,1,1),(179,5,2);
SELECT * FROM t1 WHERE level = 1 AND parent_id = 1;
id parent_id level
3 1 1
4 1 1
@ -34,6 +97,7 @@ id parent_id level
6 1 1
7 1 1
5 1 1
SELECT * FROM t1 WHERE level = 1 AND parent_id = 1 order by id;
id parent_id level
2 1 1
3 1 1
@ -41,17 +105,38 @@ id parent_id level
5 1 1
6 1 1
7 1 1
drop table t1;
create table t1(
Satellite varchar(25) not null,
SensorMode varchar(25) not null,
FullImageCornersUpperLeftLongitude double not null,
FullImageCornersUpperRightLongitude double not null,
FullImageCornersUpperRightLatitude double not null,
FullImageCornersLowerRightLatitude double not null,
index two (Satellite, SensorMode, FullImageCornersUpperLeftLongitude, FullImageCornersUpperRightLongitude, FullImageCornersUpperRightLatitude, FullImageCornersLowerRightLatitude));
insert into t1 values("OV-3","PAN1",91,-92,40,50);
insert into t1 values("OV-4","PAN1",91,-92,40,50);
select * from t1 where t1.Satellite = "OV-3" and t1.SensorMode = "PAN1" and t1.FullImageCornersUpperLeftLongitude > -90.000000 and t1.FullImageCornersUpperRightLongitude < -82.000000;
Satellite SensorMode FullImageCornersUpperLeftLongitude FullImageCornersUpperRightLongitude FullImageCornersUpperRightLatitude FullImageCornersLowerRightLatitude
OV-3 PAN1 91 -92 40 50
drop table t1;
create table t1 ( aString char(100) not null default "", key aString (aString(10)) );
insert t1 (aString) values ( "believe in myself" ), ( "believe" ), ("baaa" ), ( "believe in love");
select * from t1 where aString < "believe in myself" order by aString;
aString
baaa
believe
believe in love
select * from t1 where aString > "believe in love" order by aString;
aString
believe in myself
alter table t1 drop key aString;
select * from t1 where aString < "believe in myself" order by aString;
aString
baaa
believe
believe in love
select * from t1 where aString > "believe in love" order by aString;
aString
believe in myself
drop table t1;

View File

@ -1,14 +1,39 @@
drop table if exists t0,t1,t2,t3,t4;
create table t0 SELECT 1,"table 1";
create table t2 SELECT 2,"table 2";
create table t3 SELECT 3,"table 3";
rename table t0 to t1;
rename table t3 to t4, t2 to t3, t1 to t2, t4 to t1;
select * from t1;
3 table 3
3 table 3
rename table t3 to t4, t2 to t3, t1 to t2, t4 to t1;
rename table t3 to t4, t2 to t3, t1 to t2, t4 to t1;
select * from t1;
1 table 1
1 table 1
rename table t1 to t2;
Table './test/t2.frm' already exists
rename table t1 to t1;
Table './test/t1.frm' already exists
rename table t3 to t4, t2 to t3, t1 to t2, t4 to t2;
Table './test/t2.frm' already exists
show tables like "t_";
Tables_in_test (t_)
t1
t2
t3
rename table t3 to t1, t2 to t3, t1 to t2, t4 to t1;
Table './test/t1.frm' already exists
rename table t3 to t4, t5 to t3, t1 to t2, t4 to t1;
Can't find file: './test/t5.frm' (errno: 2)
select * from t1;
1 table 1
1 table 1
select * from t2;
2 table 2
2 table 2
select * from t3;
3 table 3
3 table 3
drop table if exists t1,t2,t3,t4;

View File

@ -1,3 +1,26 @@
drop table if exists t1;
CREATE TABLE t1 (
gesuchnr int(11) DEFAULT '0' NOT NULL,
benutzer_id int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (gesuchnr,benutzer_id)
) type=ISAM;
replace into t1 (gesuchnr,benutzer_id) values (2,1);
replace into t1 (gesuchnr,benutzer_id) values (1,1);
replace into t1 (gesuchnr,benutzer_id) values (1,1);
alter table t1 type=myisam;
replace into t1 (gesuchnr,benutzer_id) values (1,1);
alter table t1 type=heap;
replace into t1 (gesuchnr,benutzer_id) values (1,1);
drop table t1;
create table t1 (a tinyint not null auto_increment primary key, b char(20));
insert into t1 values (126,"first"),(0,"last");
insert into t1 values (0,"error");
Duplicate entry '127' for key 1
replace into t1 values (0,"error");
Duplicate entry '127' for key 1
replace into t1 values (126,"first updated");
select * from t1;
a b
126 first updated
127 last
drop table t1;

View File

@ -1,3 +1,12 @@
drop table if exists t1;
create table t1 (n int not null primary key) type=myisam;
begin work;
insert into t1 values (4);
insert into t1 values (5);
rollback;
Warning: Some non-transactional changed tables couldn't be rolled back
select * from t1;
n
4
5
drop table t1;

View File

@ -1,17 +1,73 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
use test;
drop table if exists t1,t3;
create table t1 (word char(20) not null);
load data infile '../../std_data/words.dat' into table t1;
set password = password('foo');
set password = password('');
create table t3(n int);
insert into t3 values(1),(2);
use test;
select * from t3;
n
1
2
select sum(length(word)) from t1;
sum(length(word))
71
drop table t1,t3;
reset master;
reset slave;
drop table if exists t1,t2;
create table t1(n int);
insert into t1 values(10);
insert into t1 values(9);
insert into t1 values(8);
insert into t1 values(7);
insert into t1 values(6);
insert into t1 values(5);
insert into t1 values(4);
insert into t1 values(3);
insert into t1 values(2);
insert into t1 values(1);
create table t2(id int);
insert into t2 values(connection_id());
create temporary table t1_temp(n int);
insert into t1_temp select get_lock('crash_lock', 1) from t2;
update t1 set n = n + get_lock('crash_lock', 2);
select (@id := id) - id from t2;
(@id := id) - id
0
kill @id;
drop table t2;
Server shutdown in progress
set sql_slave_skip_counter=1;
slave start;
select count(*) from t1;
count(*)
10
drop table t1;
create table t1 (n int);
insert into t1 values(3456);
use mysql;
insert into user (Host, User, Password)
VALUES ("10.10.10.%", "blafasel2", password("blafasel2"));
select select_priv,user from mysql.user where user = 'blafasel2';
select_priv user
N blafasel2
update user set Select_priv = "Y" where User="blafasel2";
select select_priv,user from mysql.user where user = 'blafasel2';
select_priv user
Y blafasel2
use test;
select n from t1;
n
3456
select select_priv,user from mysql.user where user = 'blafasel2';
select_priv user
Y blafasel2
drop table t1;

View File

@ -1,10 +1,33 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
use test;
drop table if exists t1;
create table t1 (n int auto_increment primary key);
set insert_id = 2000;
insert into t1 values (NULL),(NULL),(NULL);
use test;
select * from t1;
n
2000
2001
2002
show slave hosts;
Server_id Host Port
2 127.0.0.1 9307
drop table t1;
slave stop;
drop table if exists t2;
create table t2(id int auto_increment primary key, created datetime);
set timestamp=12345;
insert into t2 set created=now();
select * from t2;
id created
1 1970-01-01 06:25:45
slave start;
select * from t2;
id created
1 1970-01-01 06:25:45
drop table t2;

View File

@ -1,4 +1,15 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
drop table if exists t1;
create table t1(n int primary key);
insert into t1 values (1),(2),(2);
insert into t1 values (3);
select * from t1;
n
1
2
3
drop table t1;

View File

@ -1,6 +1,34 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
use test;
set SQL_LOG_BIN=0;
drop table if exists t1;
create table t1 (word char(20) not null, index(word));
load data infile '../../std_data/words.dat' into table t1;
drop table if exists t2;
create table t2 (word char(20) not null);
load data infile '../../std_data/words.dat' into table t2;
create table t3 (word char(20) not null primary key);
use test;
drop table if exists t1;
load table t1 from master;
drop table if exists t2;
load table t2 from master;
drop table if exists t3;
load table t3 from master;
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
select count(*) from t2;
count(*)
10
select count(*) from t3;
count(*)
0
set SQL_LOG_BIN=1;
drop table if exists t1,t2,t3;
create table t1(n int);
drop table t1;

View File

@ -1,8 +1,22 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
drop table if exists t1;
CREATE TABLE t1 (name varchar(64), age smallint(3));
INSERT INTO t1 SET name='Andy', age=31;
INSERT t1 SET name='Jacob', age=2;
INSERT into t1 SET name='Caleb', age=1;
ALTER TABLE t1 ADD id int(8) ZEROFILL AUTO_INCREMENT PRIMARY KEY;
select * from t1;
name age id
Andy 31 00000001
Jacob 2 00000002
Caleb 1 00000003
select * from t1;
name age id
Andy 31 00000001
Jacob 2 00000002
Caleb 1 00000003
drop table t1;

View File

@ -1,6 +1,30 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
set SQL_LOG_BIN=0,timestamp=200006;
drop table if exists t1;
create table t1(t timestamp not null,a char(1));
insert into t1 ( a) values ('F');
select unix_timestamp(t) from t1;
unix_timestamp(t)
200006
drop table if exists t1;
load table t1 from master;
select unix_timestamp(t) from t1;
unix_timestamp(t)
200006
set SQL_LOG_BIN=1,timestamp=default;
drop table t1;
set SQL_LOG_BIN=0;
CREATE TABLE t1 (
a int not null
) TYPE=MyISAM MAX_ROWS=4000 CHECKSUM=1;
INSERT INTO t1 VALUES (1);
load table t1 from master;
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;
drop table t1;

View File

@ -1,2 +1,21 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
use test;
drop table if exists foo;
create table foo (n int);
insert into foo values(4);
use test;
drop table if exists foo;
create table foo (s char(20));
load data infile '../../std_data/words.dat' into table foo;
insert into foo values('five');
drop table if exists bar;
create table bar (m int);
insert into bar values(15);
select foo.n,bar.m from foo,bar;
n m
4 15
drop table if exists bar,foo;

View File

@ -1,2 +1,24 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
use test;
drop table if exists foo;
create table foo (n int);
insert into foo values(4);
use test;
drop table if exists foo;
create table foo (n int);
insert into foo values(5);
drop table if exists bar;
create table bar (m int);
insert into bar values(15);
drop table if exists choo;
create table choo (k int);
insert into choo values(55);
select foo.n,bar.m,choo.k from foo,bar,choo;
n m k
4 15 55
drop table if exists foo,bar,choo;
drop table if exists foo,bar,choo;

View File

@ -1,32 +1,82 @@
slave stop;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
drop database if exists foo;
create database foo;
drop database if exists bar;
create database bar;
drop table if exists foo.foo;
create table foo.foo (n int);
insert into foo.foo values(4);
drop table if exists foo.foo;
create table foo.foo (n int);
insert into foo.foo values(5);
drop table if exists bar.bar;
create table bar.bar (m int);
insert into bar.bar values(15);
select foo.foo.n,bar.bar.m from foo.foo,bar.bar;
n m
4 15
drop database if exists bar;
drop database if exists foo;
drop database if exists bar;
drop database if exists foo;
set sql_log_bin = 0;
create database foo;
create database bar;
show databases;
Database
bar
foo
mysql
test
create table foo.t1(n int, s char(20));
create table foo.t2(n int, s text);
insert into foo.t1 values (1, 'one'), (2, 'two'), (3, 'three');
insert into foo.t2 values (11, 'eleven'), (12, 'twelve'), (13, 'thirteen');
create table bar.t1(n int, s char(20));
create table bar.t2(n int, s text);
insert into bar.t1 values (1, 'one bar'), (2, 'two bar'), (3, 'three bar');
insert into bar.t2 values (11, 'eleven bar'), (12, 'twelve bar'),
(13, 'thirteen bar');
set sql_log_bin = 1;
show databases;
Database
mysql
test
load data from master;
show databases;
Database
bar
foo
mysql
test
use foo;
show tables;
Tables_in_foo
use bar;
show tables;
Tables_in_bar
t1
t2
select * from bar.t1;
n s
1 one bar
2 two bar
3 three bar
select * from bar.t2;
n s
11 eleven bar
12 twelve bar
13 thirteen bar
insert into bar.t1 values (4, 'four bar');
select * from bar.t1;
n s
1 one bar
2 two bar
3 three bar
4 four bar
drop database bar;
drop database foo;

Some files were not shown because too many files have changed in this diff Show More