1berry/MariaDB-server
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge sanja.is.com.ua:/home/bell/mysql/bk/mysql-4.1

Browse Source 
into sanja.is.com.ua:/home/bell/mysql/bk/work-err-4.1
This commit is contained in:
bell@sanja.is.com.ua 2003-07-01 19:05:31 +03:00
commit 5b3594a80c
28 changed files with 785 additions and 382 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
BUILD/compile-pentium-valgrind-max
View File

@ -3,7 +3,7 @@
path=`dirname $0`
. "$path/SETUP.sh"
extra_flags="$pentium_cflags $debug_cflags -USAFEMALLOC -DHAVE_purify"
extra_flags="$pentium_cflags $debug_cflags -USAFEMALLOC -UFORCE_INIT_OF_VARS -DHAVE_purify"
c_warnings="$c_warnings $debug_extra_warnings"
cxx_warnings="$cxx_warnings $debug_extra_warnings"
extra_configs="$pentium_configs $debug_configs"

4
acinclude.m4
View File

@ -868,9 +868,9 @@ AC_SUBST(orbit_idl)
AC_DEFUN([MYSQL_CHECK_ISAM], [
AC_ARG_WITH([isam], [
--without-isam Disable the ISAM table type],
--with-isam Enable the ISAM table type],
[with_isam="$withval"],
[with_isam=yes])
[with_isam=no])
isam_libs=
if test X"$with_isam" = X"yes"

92
client/mysqltest.c
View File

@ -42,7 +42,7 @@
**********************************************************************/
#define MTEST_VERSION "1.28"
#define MTEST_VERSION "1.29"
#include <my_global.h>
#include <mysql_embed.h>
@ -64,8 +64,9 @@
#include <violite.h>
#define MAX_QUERY 65536
#define MAX_COLUMNS 256
#define PAD_SIZE 128
#define MAX_CONS 1024
#define MAX_CONS 128
#define MAX_INCLUDE_DEPTH 16
#define LAZY_GUESS_BUF_SIZE 8192
#define INIT_Q_LINES 1024
@ -192,7 +193,7 @@ Q_SYNC_WITH_MASTER,
Q_SYNC_SLAVE_WITH_MASTER,
Q_ERROR,
Q_SEND, Q_REAP,
Q_DIRTY_CLOSE, Q_REPLACE,
Q_DIRTY_CLOSE, Q_REPLACE, Q_REPLACE_COLUMN,
Q_PING, Q_EVAL,
Q_RPL_PROBE, Q_ENABLE_RPL_PARSE,
Q_DISABLE_RPL_PARSE, Q_EVAL_RESULT,
@ -246,6 +247,7 @@ const char *command_names[]=
"reap",
"dirty_close",
"replace_result",
"replace_column",
"ping",
"eval",
"rpl_probe",
@ -290,7 +292,7 @@ VAR* var_get(const char *var_name, const char** var_name_end, my_bool raw,
int eval_expr(VAR* v, const char *p, const char** p_end);
static int read_server_arguments(const char *name);
/* Definitions for replace */
/* Definitions for replace result */
typedef struct st_pointer_array { /* when using array-strings */
TYPELIB typelib; /* Pointer to strings */
@ -318,6 +320,13 @@ static char *out_buff;
static uint out_length;
static int eval_result = 0;
/* For column replace */
char *replace_column[MAX_COLUMNS];
uint max_replace_column= 0;
static void get_replace_column(struct st_query *q);
static void free_replace_column();
/* Disable functions that only exist in MySQL 4.0 */
#if MYSQL_VERSION_ID < 40000 || defined(EMBEDDED_LIBRARY)
void mysql_enable_rpl_parse(MYSQL* mysql __attribute__((unused))) {}
@ -338,7 +347,6 @@ static const char *embedded_server_groups[] = {
NullS
};
static void do_eval(DYNAMIC_STRING* query_eval, const char* query)
{
const char* p;
@ -433,6 +441,7 @@ static void free_used_memory()
delete_dynamic(&q_lines);
dynstr_free(&ds_res);
free_replace();
free_replace_column();
my_free(pass,MYF(MY_ALLOW_ZERO_PTR));
free_defaults(default_argv);
mysql_server_end();
@ -2048,23 +2057,31 @@ static void replace_dynstr_append_mem(DYNAMIC_STRING *ds, const char *val,
dynstr_append_mem(ds, val, len);
}
/*
Append all results to the dynamic string separated with '\t'
Values may be converted with 'replace_column'
*/
static void append_result(DYNAMIC_STRING *ds, MYSQL_RES *res)
{
MYSQL_ROW row;
int num_fields= mysql_num_fields(res);
uint num_fields= mysql_num_fields(res);
unsigned long *lengths;
while ((row = mysql_fetch_row(res)))
{
int i;
uint i;
lengths = mysql_fetch_lengths(res);
for (i = 0; i < num_fields; i++)
{
const char *val= row[i];
ulonglong len= lengths[i];
if (i < max_replace_column && replace_column[i])
{
val= replace_column[i];
len= strlen(val);
}
if (!val)
{
val= "NULL";
@ -2076,6 +2093,7 @@ static void append_result(DYNAMIC_STRING *ds, MYSQL_RES *res)
}
dynstr_append_mem(ds, "\n", 1);
}
free_replace_column();
}
@ -2539,6 +2557,9 @@ int main(int argc, char **argv)
case Q_REPLACE:
get_replace(q);
break;
case Q_REPLACE_COLUMN:
get_replace_column(q);
break;
case Q_SAVE_MASTER_POS: do_save_master_pos(); break;
case Q_SYNC_WITH_MASTER: do_sync_with_master(q); break;
case Q_SYNC_SLAVE_WITH_MASTER:
@ -3357,3 +3378,60 @@ static void free_replace_buffer(void)
{
my_free(out_buff,MYF(MY_WME));
}
/****************************************************************************
Replace results for a column
*****************************************************************************/
static void free_replace_column()
{
uint i;
for (i=0 ; i < max_replace_column ; i++)
{
if (replace_column[i])
{
my_free(replace_column[i], 0);
replace_column[i]= 0;
}
}
max_replace_column= 0;
}
/*
Get arguments for replace_columns. The syntax is:
replace-column column_number to_string [column_number to_string ...]
Where each argument may be quoted with ' or "
A argument may also be a variable, in which case the value of the
variable is replaced.
*/
static void get_replace_column(struct st_query *q)
{
char *from=q->first_argument;
char *buff,*start;
DBUG_ENTER("get_replace_columns");
free_replace_column();
if (!*from)
die("Missing argument in %s\n", q->query);
/* Allocate a buffer for results */
start=buff=my_malloc(strlen(from)+1,MYF(MY_WME | MY_FAE));
while (*from)
{
char *to;
uint column_number;
to= get_string(&buff, &from, q);
if (!(column_number= atoi(to)) || column_number > MAX_COLUMNS)
die("Wrong column number to replace_columns in %s\n", q->query);
if (!*from)
die("Wrong number of arguments to replace in %s\n", q->query);
to= get_string(&buff, &from, q);
my_free(replace_column[column_number-1], MY_ALLOW_ZERO_PTR);
replace_column[column_number-1]= my_strdup(to, MYF(MY_WME | MY_FAE));
set_if_bigger(max_replace_column, column_number);
}
my_free(start, MYF(0));
}

7
mysql-test/r/auto_increment.result
View File

@ -111,11 +111,16 @@ insert into t1 set i = null;
select last_insert_id();
last_insert_id()
255
insert into t1 set i = 254;
ERROR 23000: Duplicate entry '254' for key 1
select last_insert_id();
last_insert_id()
255
insert into t1 set i = null;
ERROR 23000: Duplicate entry '255' for key 1
select last_insert_id();
last_insert_id()
255
0
drop table t1;
create table t1 (i tinyint unsigned not null auto_increment, key (i));
insert into t1 set i = 254;

6
mysql-test/r/distinct.result
View File

@ -173,9 +173,9 @@ 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;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 index a a 5 NULL 6 Using index; Using temporary
1 SIMPLE t2 index a a 4 NULL 5 Using index; Distinct
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using where; Distinct
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 2 Using temporary
1 SIMPLE t2 ref a a 4 test.t1.a 2 Using index
1 SIMPLE t3 ref a a 5 test.t1.b 2 Using where; Using index
SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
a
1

2
mysql-test/r/func_gconcat.result
View File

@ -169,7 +169,7 @@ select REQ_ID, Group_Concat(URL) as URL from T_URL, T_REQUEST where
T_REQUEST.URL_ID = T_URL.URL_ID group by REQ_ID;
REQ_ID URL
1 www.host.com
5 www.host.com,www.google.com,www.help.com
5 www.google.com,www.help.com,www.host.com
drop table T_URL;
drop table T_REQUEST;
select group_concat(sum(a)) from t1 group by grp;

2
mysql-test/r/grant_cache.result
View File

@ -122,7 +122,7 @@ select "user4";
user4
user4
select a from t1;
ERROR 42000: No Database Selected
ERROR 3D000: No Database Selected
select * from mysqltest.t1,test.t1;
a b c a
1 1 1 test.t1

48
mysql-test/r/merge.result
View File

@ -1,4 +1,5 @@
drop table if exists t1,t2,t3,t4,t5,t6;
drop database if exists mysqltest;
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");
@ -174,15 +175,26 @@ t3 CREATE TABLE `t3` (
`a` int(11) NOT NULL default '0',
`b` char(20) default NULL,
KEY `a` (`a`)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(t1,t2)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(`t1`,`t2`)
create table t4 (a int not null, b char(10), key(a)) type=MERGE UNION=(t1,t2);
select * from t4;
ERROR HY000: 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);
ERROR HY000: Incorrect table definition; All MERGE tables must be in the same database
drop table if exists t5,t4,t3,t1,t2;
Warnings:
Note 1051 Unknown table 't5'
alter table t4 add column c int;
ERROR HY000: Can't open file: 't4.MRG'. (errno: 143)
create database mysqltest;
create table mysqltest.t6 (a int not null primary key auto_increment, message char(20));
create table t5 (a int not null, b char(20), key(a)) type=MERGE UNION=(test.t1,mysqltest.t6);
show create table t5;
Table Create Table
t5 CREATE TABLE `t5` (
`a` int(11) NOT NULL default '0',
`b` char(20) default NULL,
KEY `a` (`a`)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(`t1`,`mysqltest`.`t6`)
alter table t5 type=myisam;
drop table t5, mysqltest.t6;
drop database mysqltest;
drop table 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;
@ -251,14 +263,14 @@ t3 CREATE TABLE `t3` (
`incr` int(11) NOT NULL default '0',
`othr` int(11) NOT NULL default '0',
PRIMARY KEY (`incr`)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(t1,t2)
) TYPE=MRG_MyISAM CHARSET=latin1 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 CHARSET=latin1 UNION=(t1,t2)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(`t1`,`t2`)
drop table t3,t2,t1;
create table t1 (a int not null, key(a)) type=merge;
select * from t1;
@ -294,21 +306,21 @@ t4 CREATE TABLE `t4` (
`a` int(11) NOT NULL default '0',
`b` int(11) NOT NULL default '0',
KEY `a` (`a`,`b`)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(t1,t2)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(`t1`,`t2`)
show create table t5;
Table Create Table
t5 CREATE TABLE `t5` (
`a` int(11) NOT NULL default '0',
`b` int(11) NOT NULL auto_increment,
PRIMARY KEY (`a`,`b`)
) TYPE=MRG_MyISAM CHARSET=latin1 INSERT_METHOD=FIRST UNION=(t1,t2)
) TYPE=MRG_MyISAM CHARSET=latin1 INSERT_METHOD=FIRST UNION=(`t1`,`t2`)
show create table t6;
Table Create Table
t6 CREATE TABLE `t6` (
`a` int(11) NOT NULL default '0',
`b` int(11) NOT NULL auto_increment,
PRIMARY KEY (`a`,`b`)
) TYPE=MRG_MyISAM CHARSET=latin1 INSERT_METHOD=LAST UNION=(t1,t2)
) TYPE=MRG_MyISAM CHARSET=latin1 INSERT_METHOD=LAST UNION=(`t1`,`t2`)
insert into t1 values (1,NULL),(1,NULL),(1,NULL),(1,NULL);
insert into t2 values (2,NULL),(2,NULL),(2,NULL),(2,NULL);
select * from t3 order by b,a limit 3;
@ -373,7 +385,7 @@ t4 CREATE TABLE `t4` (
`a` int(11) NOT NULL default '0',
`b` int(11) NOT NULL default '0',
KEY `a` (`a`,`b`)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(t1,t2,t3)
) TYPE=MRG_MyISAM CHARSET=latin1 UNION=(`t1`,`t2`,`t3`)
select * from t4 order by a,b;
a b
1 1
@ -399,7 +411,7 @@ t4 CREATE TABLE `t4` (
`a` int(11) NOT NULL default '0',
`b` int(11) NOT NULL default '0',
KEY `a` (`a`,`b`)
) TYPE=MRG_MyISAM CHARSET=latin1 INSERT_METHOD=FIRST UNION=(t1,t2,t3)
) TYPE=MRG_MyISAM CHARSET=latin1 INSERT_METHOD=FIRST UNION=(`t1`,`t2`,`t3`)
insert into t4 values (4,1),(4,2);
select * from t1 order by a,b;
a b
@ -528,7 +540,11 @@ a b
6 1
6 2
6 3
drop table if exists t6, t5, t4, t3, t2, t1;
insert into t1 values (99,NULL);
select * from t4 where a+0 > 90;
a b
99 1
drop table t6, t5, t4, t3, t2, t1;
CREATE TABLE t1 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', PRIMARY KEY (a,b)) TYPE=MyISAM;
INSERT INTO t1 VALUES (1,1), (2,1);
CREATE TABLE t2 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', PRIMARY KEY (a,b)) TYPE=MyISAM;
@ -540,7 +556,7 @@ max(b)
select max(b) from t1 where a = 2;
max(b)
1
drop table if exists t3,t1,t2;
drop table t3,t1,t2;
create table t1 (a int not null);
create table t2 (a int not null);
insert into t1 values (1);
@ -559,7 +575,7 @@ select * from t6;
a
1
2
drop table if exists t6, t3, t1, t2, t4, t5;
drop table t6, t3, t1, t2, t4, t5;
CREATE TABLE t1 (
fileset_id tinyint(3) unsigned NOT NULL default '0',
file_code varchar(32) NOT NULL default '',

110
mysql-test/r/null_key.result
View File

@ -21,7 +21,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a,b a 9 NULL 3 Using where; Using index
explain select * from t1 where (a is null or a = 7) and b=7;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref a,b b 4 const 2 Using where
1 SIMPLE t1 ref_or_null a,b a 9 const,const 2 Using where; Using index
explain select * from t1 where (a is null or a = 7) and b=7 order by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref_or_null a,b a 9 const,const 2 Using where; Using index; Using filesort
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref a,b a 5 const 3 Using where; Using index
@ -56,13 +59,15 @@ NULL 9
NULL 9
select * from t1 where (a is null or a = 7) and b=7;
a b
NULL 7
7 7
NULL 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
create table t2 like t1;
insert into t2 select * from t1;
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;
id select_type table type possible_keys key key_len ref rows Extra
@ -84,7 +89,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a,b a 5 NULL 5 Using where
explain select * from t1 where (a is null or a = 7) and b=7 and c=0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL a,b NULL NULL NULL 12 Using where
1 SIMPLE t1 ref_or_null a,b a 5 const 4 Using where
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref a,b a 5 const 3 Using where
@ -125,8 +130,8 @@ 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
NULL 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
@ -136,6 +141,103 @@ select * from t1 where b like "6%";
a b c
6 6 0
drop table t1;
rename table t2 to t1;
alter table t1 modify b int null;
insert into t1 values (7,null), (8,null), (8,7);
explain select * from t1 where a = 7 and (b=7 or b is null);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref_or_null a,b a 10 const,const 2 Using where; Using index
select * from t1 where a = 7 and (b=7 or b is null);
a b
7 7
7 NULL
explain select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a,b a 10 NULL 4 Using where; Using index
select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
a b
NULL 7
7 NULL
7 7
explain select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref_or_null a a 5 const 5 Using where; Using index
select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
a b
7 NULL
7 7
NULL 7
NULL 9
NULL 9
create table t2 (a int);
insert into t2 values (7),(8);
explain select * from t2 straight_join t1 where t1.a=t2.a and b is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ref a,b a 10 test.t2.a,const 2 Using where; Using index
drop index b on t1;
explain select * from t2,t1 where t1.a=t2.a and b is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ref a a 10 test.t2.a,const 2 Using where; Using index
select * from t2,t1 where t1.a=t2.a and b is null;
a a b
7 7 NULL
8 8 NULL
explain select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ref_or_null a a 10 test.t2.a,const 4 Using where; Using index
select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
a a b
7 7 7
7 7 NULL
8 8 7
8 8 NULL
explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ref_or_null a a 10 test.t2.a,const 4 Using where; Using index
select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
a a b
7 7 7
7 NULL 7
8 8 7
8 NULL 7
explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ref_or_null a a 5 test.t2.a 4 Using where; Using index
select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
a a b
7 7 NULL
7 7 7
7 NULL 7
8 8 NULL
8 8 7
8 NULL 7
insert into t2 values (null),(6);
delete from t1 where a=8;
explain select * from t2,t1 where t1.a=t2.a or t1.a is null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 4
1 SIMPLE t1 ref_or_null a a 5 test.t2.a 4 Using where; Using index
explain select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 4
1 SIMPLE t1 ref_or_null a a 5 test.t2.a 4 Using where; Using index
select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
a a b
7 7 NULL
7 7 7
7 NULL 7
8 NULL 7
NULL NULL 7
NULL NULL 9
NULL NULL 9
6 6 6
6 NULL 7
drop table t1,t2;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL auto_increment,
uniq_id int(10) unsigned default NULL,

2
mysql-test/r/subselect.result
View File

@ -829,7 +829,7 @@ a t1.a in (select t2.a from t2)
explain SELECT t1.a, t1.a in (select t2.a from t2) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 Using index
2 DEPENDENT SUBQUERY t2 index a a 5 NULL 3 Using where; Using index
2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 const 2 Using where; Using index
drop table t1,t2;
create table t1 (a float);
select 10.5 IN (SELECT * from t1 LIMIT 1);

4
mysql-test/t/auto_increment.test
View File

@ -80,6 +80,9 @@ insert into t1 set i = 254;
insert into t1 set i = null;
select last_insert_id();
--error 1062
insert into t1 set i = 254;
select last_insert_id();
--error 1062
insert into t1 set i = null;
select last_insert_id();
drop table t1;
@ -100,5 +103,6 @@ select last_insert_id();
--error 1062
insert into t1 values (NULL, 10);
select last_insert_id();
drop table t1;

4
mysql-test/t/innodb.test
View File

@ -22,7 +22,7 @@ drop table t1;
#
# A bit bigger test
# The 'replace_result' statements are needed because the cardinality calculated
# The 'replace_column' statements are needed because the cardinality calculated
# by innodb is not always the same between runs
#
@ -51,7 +51,7 @@ select * from t1 where parent_id=102;
select level,id from t1 where level=1;
select level,id,parent_id from t1 where level=1;
optimize table t1;
--replace_result 87 # 50 # 48 # 43 # 25 # 24 # 6 # 3 #
--replace_column 7 #
show keys from t1;
drop table t1;

27
mysql-test/t/merge.test
View File

@ -4,6 +4,7 @@
--disable_warnings
drop table if exists t1,t2,t3,t4,t5,t6;
drop database if exists mysqltest;
--enable_warnings
create table t1 (a int not null primary key auto_increment, message char(20));
@ -48,12 +49,22 @@ show create table t3;
create table t4 (a int not null, b char(10), key(a)) type=MERGE UNION=(t1,t2);
--error 1016
select * from t4;
--error 1212
create table t5 (a int not null, b char(10), key(a)) type=MERGE UNION=(test.t1,test_2.t2);
--error 1016
alter table t4 add column c int;
#
# Test tables in different databases
#
create database mysqltest;
create table mysqltest.t6 (a int not null primary key auto_increment, message char(20));
create table t5 (a int not null, b char(20), key(a)) type=MERGE UNION=(test.t1,mysqltest.t6);
show create table t5;
alter table t5 type=myisam;
drop table t5, mysqltest.t6;
drop database mysqltest;
# Because of windows, it's important that we drop the merge tables first!
# This should give a warning on table t5
drop table if exists t5,t4,t3,t1,t2;
drop table t4,t3,t1,t2;
create table t1 (c char(10)) type=myisam;
create table t2 (c char(10)) type=myisam;
@ -177,7 +188,9 @@ select * from t1 order by a,b;
select * from t2 order by a,b;
select * from t5 order by a,b;
select * from t6 order by a,b;
drop table if exists t6, t5, t4, t3, t2, t1;
insert into t1 values (99,NULL);
select * from t4 where a+0 > 90;
drop table t6, t5, t4, t3, t2, t1;
CREATE TABLE t1 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', PRIMARY KEY (a,b)) TYPE=MyISAM;
INSERT INTO t1 VALUES (1,1), (2,1);
@ -186,7 +199,7 @@ INSERT INTO t2 VALUES (1,2), (2,2);
CREATE TABLE t3 ( a int(11) NOT NULL default '0', b int(11) NOT NULL default '0', KEY a (a,b)) TYPE=MRG_MyISAM UNION=(t1,t2);
select max(b) from t3 where a = 2;
select max(b) from t1 where a = 2;
drop table if exists t3,t1,t2;
drop table t3,t1,t2;
#
# temporary merge tables
@ -203,7 +216,7 @@ insert into t4 values (1);
insert into t5 values (2);
create temporary table t6 (a int not null) TYPE=MERGE UNION=(t4,t5);
select * from t6;
drop table if exists t6, t3, t1, t2, t4, t5;
drop table t6, t3, t1, t2, t4, t5;
#
# testing merge::records_in_range and optimizer

35
mysql-test/t/null_key.test
View File

@ -14,6 +14,7 @@ explain select * from t1 where a=2 and b = 2;
explain select * from t1 where a<=>b limit 2;
explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
explain select * from t1 where (a is null or a = 7) and b=7;
explain select * from t1 where (a is null or a = 7) and b=7 order by a;
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
explain select * from t1 where a > 1 and a < 3 limit 1;
@ -25,6 +26,8 @@ select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
select * from t1 where (a is null or a = 7) and b=7;
select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
create table t2 like t1;
insert into t2 select * from t1;
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;
explain select * from t1 where a is null and b = 2 and c=0;
@ -47,8 +50,38 @@ select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
select * from t1 where (a is null or a = 7) and b=7 and c=0;
select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
select * from t1 where b like "6%";
drop table t1;
#
# Test ref_or_null optimization
#
drop table t1;
rename table t2 to t1;
alter table t1 modify b int null;
insert into t1 values (7,null), (8,null), (8,7);
explain select * from t1 where a = 7 and (b=7 or b is null);
select * from t1 where a = 7 and (b=7 or b is null);
explain select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
explain select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
create table t2 (a int);
insert into t2 values (7),(8);
explain select * from t2 straight_join t1 where t1.a=t2.a and b is null;
drop index b on t1;
explain select * from t2,t1 where t1.a=t2.a and b is null;
select * from t2,t1 where t1.a=t2.a and b is null;
explain select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
insert into t2 values (null),(6);
delete from t1 where a=8;
explain select * from t2,t1 where t1.a=t2.a or t1.a is null;
explain select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
drop table t1,t2;
#
# The following failed for Matt Loschert

11
mysys/mf_loadpath.c
View File

@ -28,6 +28,7 @@ my_string my_load_path(my_string to, const char *path,
const char *own_path_prefix)
{
char buff[FN_REFLEN];
int is_cur;
DBUG_ENTER("my_load_path");
DBUG_PRINT("enter",("path: %s prefix: %s",path,
own_path_prefix ? own_path_prefix : ""));
@ -35,14 +36,16 @@ my_string my_load_path(my_string to, const char *path,
if ((path[0] == FN_HOMELIB && path[1] == FN_LIBCHAR) ||
test_if_hard_path(path))
VOID(strmov(buff,path));
else if ((path[0] == FN_CURLIB && path[1] == FN_LIBCHAR) ||
else if ((is_cur=(path[0] == FN_CURLIB && path[1] == FN_LIBCHAR)) ||
(is_prefix((gptr) path,FN_PARENTDIR)) ||
! own_path_prefix)
{
if (! my_getwd(buff,(uint) (FN_REFLEN-strlen(path)),MYF(0)))
VOID(strcat(buff,path));
if (is_cur)
is_cur=2; /* Remove current dir */
if (! my_getwd(buff,(uint) (FN_REFLEN-strlen(path)+is_cur),MYF(0)))
VOID(strcat(buff,path+is_cur));
else
VOID(strmov(buff,path));
VOID(strmov(buff,path)); /* Return org file name */
}
else
VOID(strxmov(buff,own_path_prefix,path,NullS));

12
mysys/my_symlink.c
View File

@ -123,20 +123,22 @@ int my_realpath(char *to, const char *filename,
}
else
{
/* Realpath didn't work; Use original name */
/*
Realpath didn't work; Use my_load_path() which is a poor substitute
original name but will at least be able to resolve paths that starts
with '.'.
*/
DBUG_PRINT("error",("realpath failed with errno: %d", errno));
my_errno=errno;
if (MyFlags & MY_WME)
my_error(EE_REALPATH, MYF(0), filename, my_errno);
if (to != filename)
strmov(to,filename);
my_load_path(to, filename, NullS);
result= -1;
}
}
DBUG_RETURN(result);
#else
if (to != filename)
strmov(to,filename);
my_load_path(to, filename, NullS);
return 0;
#endif
}

83
sql/ha_myisammrg.cc
View File

@ -303,14 +303,40 @@ THR_LOCK_DATA **ha_myisammrg::store_lock(THD *thd,
return to;
}
/* Find out database name and table name from a filename */
static void split_file_name(const char *file_name,
LEX_STRING *db, LEX_STRING *name)
{
uint name_length, dir_length, prefix_length;
char buff[FN_REFLEN];
db->length= 0;
name_length= (uint) (strmake(buff, file_name, sizeof(buff)-1) - buff);
dir_length= dirname_length(buff);
if (dir_length > 1)
{
/* Get database */
buff[dir_length-1]= 0; // Remove end '/'
prefix_length= dirname_length(buff);
db->str= (char*) file_name+ prefix_length;
db->length= dir_length - prefix_length -1;
}
name->str= (char*) file_name+ dir_length;
name->length= (uint) (fn_ext(name->str) - name->str);
}
void ha_myisammrg::update_create_info(HA_CREATE_INFO *create_info)
{
// [phi] auto_increment stuff is missing (but currently not needed)
DBUG_ENTER("ha_myisammrg::update_create_info");
if (!(create_info->used_fields & HA_CREATE_USED_UNION))
{
MYRG_TABLE *open_table;
THD *thd=current_thd;
create_info->merge_list.next= &create_info->merge_list.first;
create_info->merge_list.elements=0;
@ -318,14 +344,17 @@ void ha_myisammrg::update_create_info(HA_CREATE_INFO *create_info)
open_table != file->end_table ;
open_table++)
{
char *name=open_table->table->filename;
char buff[FN_REFLEN];
TABLE_LIST *ptr;
LEX_STRING db, name;
if (!(ptr = (TABLE_LIST *) thd->calloc(sizeof(TABLE_LIST))))
goto err;
fn_format(buff,name,"","",3);
if (!(ptr->real_name=thd->strdup(buff)))
split_file_name(open_table->table->filename, &db, &name);
if (!(ptr->real_name= thd->strmake(name.str, name.length)))
goto err;
if (db.length && !(ptr->db= thd->strmake(db.str, db.length)))
goto err;
create_info->merge_list.elements++;
(*create_info->merge_list.next) = (byte*) ptr;
create_info->merge_list.next= (byte**) &ptr->next;
@ -344,37 +373,34 @@ err:
DBUG_VOID_RETURN;
}
int ha_myisammrg::create(const char *name, register TABLE *form,
HA_CREATE_INFO *create_info)
{
char buff[FN_REFLEN],**table_names,**pos;
TABLE_LIST *tables= (TABLE_LIST*) create_info->merge_list.first;
THD *thd= current_thd;
DBUG_ENTER("ha_myisammrg::create");
if (!(table_names= (char**) sql_alloc((create_info->merge_list.elements+1)*
if (!(table_names= (char**) thd->alloc((create_info->merge_list.elements+1)*
sizeof(char*))))
DBUG_RETURN(1);
for (pos=table_names ; tables ; tables=tables->next)
{
char *table_name;
TABLE **tbl= 0;
if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
{
TABLE **tbl=find_temporary_table(current_thd,
tables->db, tables->real_name);
tbl= find_temporary_table(thd, tables->db, tables->real_name);
if (!tbl)
{
table_name=sql_alloc(1+
my_snprintf(buff,FN_REFLEN,"%s/%s/%s",mysql_real_data_home,
tables->db, tables->real_name));
if (!table_name)
uint length= my_snprintf(buff,FN_REFLEN,"%s%s/%s",
mysql_real_data_home,
tables->db, tables->real_name);
if (!(table_name= thd->strmake(buff, length)))
DBUG_RETURN(1);
strcpy(table_name, buff);
}
else
table_name=(*tbl)->path;
}
else
table_name=tables->real_name;
*pos++= table_name;
}
*pos=0;
@ -384,9 +410,13 @@ int ha_myisammrg::create(const char *name, register TABLE *form,
(my_bool) 0));
}
void ha_myisammrg::append_create_info(String *packet)
{
char buff[FN_REFLEN];
const char *current_db;
uint db_length;
THD *thd= current_thd;
if (file->merge_insert_method != MERGE_INSERT_DISABLED)
{
packet->append(" INSERT_METHOD=",15);
@ -395,15 +425,26 @@ void ha_myisammrg::append_create_info(String *packet)
packet->append(" UNION=(",8);
MYRG_TABLE *open_table,*first;
current_db= table->table_cache_key;
db_length= strlen(current_db);
for (first=open_table=file->open_tables ;
open_table != file->end_table ;
open_table++)
{
char *name= open_table->table->filename;
fn_format(buff,name,"","",3);
LEX_STRING db, name;
split_file_name(open_table->table->filename, &db, &name);
if (open_table != first)
packet->append(',');
packet->append(buff,(uint) strlen(buff));
/* Report database for mapped table if it isn't in current database */
if (db.length &&
(db_length != db.length ||
strncmp(current_db, db.str, db.length)))
{
append_identifier(thd, packet, db.str, db.length);
packet->append('.');
}
append_identifier(thd, packet, name.str, name.length);
}
packet->append(')');
}

2
sql/handler.cc
View File

@ -709,6 +709,8 @@ void handler::update_auto_increment()
nr=get_auto_increment();
if (!table->next_number_field->store(nr))
thd->insert_id((ulonglong) nr);
else
thd->insert_id(table->next_number_field->val_int());
auto_increment_column_changed=1;
DBUG_VOID_RETURN;
}

2
sql/mysql_priv.h
View File

@ -532,6 +532,8 @@ int mysqld_show_fields(THD *thd,TABLE_LIST *table, const char *wild,
bool verbose);
int mysqld_show_keys(THD *thd, TABLE_LIST *table);
int mysqld_show_logs(THD *thd);
void append_identifier(THD *thd, String *packet, const char *name,
uint length);
void mysqld_list_fields(THD *thd,TABLE_LIST *table, const char *wild);
int mysqld_dump_create_info(THD *thd, TABLE *table, int fd = -1);
int mysqld_show_create(THD *thd, TABLE_LIST *table_list);

2
sql/protocol.cc
View File

@ -572,7 +572,7 @@ bool Protocol::send_fields(List<Item> *list, uint flag)
#endif
}
send_eof(thd);
send_eof(thd, 1);
DBUG_RETURN(prepare_for_send(list));
err:

19
sql/sql_class.h
View File

@ -503,8 +503,23 @@ public:
#ifdef SIGNAL_WITH_VIO_CLOSE
Vio* active_vio;
#endif
ulonglong next_insert_id,last_insert_id,current_insert_id,
limit_found_rows;
/*
next_insert_id is set on SET INSERT_ID= #. This is used as the next
generated auto_increment value in handler.cc
*/
ulonglong next_insert_id;
/*
The insert_id used for the last statement or set by SET LAST_INSERT_ID=#
or SELECT LAST_INSERT_ID(#). Used for binary log and returned by
LAST_INSERT_ID()
*/
ulonglong last_insert_id;
/*
Set to the first value that LAST_INSERT_ID() returned for the last
statement. When this is set, last_insert_id_used is set to true.
*/
ulonglong current_insert_id;
ulonglong limit_found_rows;
ha_rows select_limit, offset_limit, cuted_fields,
sent_row_count, examined_row_count;
table_map used_tables;

6
sql/sql_parse.cc
View File

@ -3393,11 +3393,6 @@ static bool check_merge_table_access(THD *thd, char *db,
{
if (!tmp->db || !tmp->db[0])
tmp->db=db;
else if (strcmp(tmp->db,db))
{
send_error(thd,ER_UNION_TABLES_IN_DIFFERENT_DIR);
return 1;
}
}
error=check_table_access(thd, SELECT_ACL | UPDATE_ACL | DELETE_ACL,
table_list);
@ -4430,6 +4425,7 @@ static bool append_file_to_dir(THD *thd, char **filename_ptr, char *table_name)
return 0;
}
/*
Check if the select is a simple select (not an union)

535
sql/sql_select.cc
View File

@ -31,8 +31,11 @@
#include <ft_global.h>
const char *join_type_str[]={ "UNKNOWN","system","const","eq_ref","ref",
"MAYBE_REF","ALL","range","index","fulltext" };
"MAYBE_REF","ALL","range","index","fulltext",
"ref_or_null"
};
static void optimize_keyuse(JOIN *join, DYNAMIC_ARRAY *keyuse_array);
static bool make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
DYNAMIC_ARRAY *keyuse);
static bool update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,
@ -106,6 +109,8 @@ static int join_read_prev_same(READ_RECORD *info);
static int join_read_prev(READ_RECORD *info);
static int join_ft_read_first(JOIN_TAB *tab);
static int join_ft_read_next(READ_RECORD *info);
static int join_read_always_key_or_null(JOIN_TAB *tab);
static int join_read_next_same_or_null(READ_RECORD *info);
static COND *make_cond_for_table(COND *cond,table_map table,
table_map used_table);
static Item* part_of_refkey(TABLE *form,Field *field);
@ -1459,8 +1464,9 @@ make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
DYNAMIC_ARRAY *keyuse_array)
{
int error;
uint i,table_count,const_count,found_ref,refs,key,const_ref,eq_part;
table_map found_const_table_map,all_table_map;
uint i,table_count,const_count,key;
table_map found_const_table_map, all_table_map, found_ref, refs;
key_map const_ref, eq_part;
TABLE **table_vector;
JOIN_TAB *stat,*stat_end,*s,**stat_ref;
KEYUSE *keyuse,*start_keyuse;
@ -1635,16 +1641,17 @@ make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
key=keyuse->key;
s->keys|= (key_map) 1 << key; // QQ: remove this ?
refs=const_ref=eq_part=0;
refs=const_ref=0;
eq_part=0;
do
{
if (keyuse->val->type() != Item::NULL_ITEM)
if (keyuse->val->type() != Item::NULL_ITEM && !keyuse->optimize)
{
if (!((~found_const_table_map) & keyuse->used_tables))
const_ref|= (key_map) 1 << keyuse->keypart;
else
refs|=keyuse->used_tables;
eq_part|= (uint) 1 << keyuse->keypart;
eq_part|= (key_map) 1 << keyuse->keypart;
}
keyuse++;
} while (keyuse->table == table && keyuse->key == key);
@ -1703,8 +1710,6 @@ make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
if (s->worst_seeks < 2.0) // Fix for small tables
s->worst_seeks=2.0;
/* if (s->type == JT_EQ_REF)
continue; */
if (s->const_keys)
{
ha_rows records;
@ -1755,7 +1760,10 @@ make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
join->found_const_table_map=found_const_table_map;
if (join->const_tables != join->tables)
{
optimize_keyuse(join, keyuse_array);
find_best_combination(join,all_table_map & ~join->const_table_map);
}
else
{
memcpy((gptr) join->best_positions,(gptr) join->positions,
@ -1777,13 +1785,26 @@ make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
typedef struct key_field_t { // Used when finding key fields
Field *field;
Item *val; // May be empty if diff constant
uint level,const_level; // QQ: Remove const_level
uint level;
uint optimize;
bool eq_func;
bool exists_optimize;
} KEY_FIELD;
/* Values in optimize */
#define KEY_OPTIMIZE_EXISTS 1
#define KEY_OPTIMIZE_REF_OR_NULL 2
/* merge new key definitions to old ones, remove those not used in both */
/*
Merge new key definitions to old ones, remove those not used in both
This is called for OR between different levels
To be able to do 'ref_or_null' we merge a comparison of a column
and 'column IS NULL' to one test. This is useful for sub select queries
that are internally transformed to something like:
SELECT * FROM t1 WHERE t1.key=outer_ref_field or t1.key IS NULL
*/
static KEY_FIELD *
merge_key_fields(KEY_FIELD *start,KEY_FIELD *new_fields,KEY_FIELD *end,
@ -1805,20 +1826,46 @@ merge_key_fields(KEY_FIELD *start,KEY_FIELD *new_fields,KEY_FIELD *end,
{
if (new_fields->val->used_tables())
{
/*
If the value matches, we can use the key reference.
If not, we keep it until we have examined all new values
*/
if (old->val->eq(new_fields->val, old->field->binary()))
{
old->level=old->const_level=and_level;
old->exists_optimize&=new_fields->exists_optimize;
old->level= and_level;
old->optimize= ((old->optimize & new_fields->optimize &
KEY_OPTIMIZE_EXISTS) |
((old->optimize | new_fields->optimize) &
KEY_OPTIMIZE_REF_OR_NULL));
}
}
else if (old->val->eq(new_fields->val, old->field->binary()) &&
old->eq_func && new_fields->eq_func)
else if (old->eq_func && new_fields->eq_func &&
old->val->eq(new_fields->val, old->field->binary()))
{
old->level=old->const_level=and_level;
old->exists_optimize&=new_fields->exists_optimize;
old->level= and_level;
old->optimize= ((old->optimize & new_fields->optimize &
KEY_OPTIMIZE_EXISTS) |
((old->optimize | new_fields->optimize) &
KEY_OPTIMIZE_REF_OR_NULL));
}
else // Impossible; remove it
else if (old->eq_func && new_fields->eq_func &&
(old->val->is_null() || new_fields->val->is_null()))
{
/* field = expression OR field IS NULL */
old->level= and_level;
old->optimize= KEY_OPTIMIZE_REF_OR_NULL;
/* Remember the NOT NULL value */
if (old->val->is_null())
old->val= new_fields->val;
}
else
{
/*
We are comparing two different const. In this case we can't
use a key-lookup on this so it's better to remove the value
and let the range optimzier handle it
*/
if (old == --first_free) // If last item
break;
*old= *first_free; // Remove old value
@ -1830,7 +1877,7 @@ merge_key_fields(KEY_FIELD *start,KEY_FIELD *new_fields,KEY_FIELD *end,
/* Remove all not used items */
for (KEY_FIELD *old=start ; old != first_free ;)
{
if (old->level != and_level && old->const_level != and_level)
if (old->level != and_level)
{ // Not used in all levels
if (old == --first_free)
break;
@ -1843,32 +1890,53 @@ merge_key_fields(KEY_FIELD *start,KEY_FIELD *new_fields,KEY_FIELD *end,
}
/*
Add a possible key to array of possible keys if it's usable as a key
SYNPOSIS
add_key_field()
key_fields Pointer to add key, if usable
and_level And level, to be stored in KEY_FIELD
field Field used in comparision
eq_func True if we used =, <=> or IS NULL
value Value used for comparison with field
Is NULL for BETWEEN and IN
usable_tables Tables which can be used for key optimization
NOTES
If we are doing a NOT NULL comparison on a NOT NULL field in a outer join
table, we store this to be able to do not exists optimization later.
RETURN
*key_fields is incremented if we stored a key in the array
*/
static void
add_key_field(KEY_FIELD **key_fields,uint and_level,
Field *field,bool eq_func,Item *value,
table_map usable_tables)
{
bool exists_optimize=0;
uint exists_optimize= 0;
if (!(field->flags & PART_KEY_FLAG))
{
// Don't remove column IS NULL on a LEFT JOIN table
if (!eq_func || !value || value->type() != Item::NULL_ITEM ||
!field->table->maybe_null || field->null_ptr)
return; // Not a key. Skip it
exists_optimize=1;
exists_optimize= KEY_OPTIMIZE_EXISTS;
}
else
{
table_map used_tables=0;
if (value && (used_tables=value->used_tables()) &
(field->table->map | RAND_TABLE_BIT))
if (value && ((used_tables=value->used_tables()) &
(field->table->map | RAND_TABLE_BIT)))
return;
if (!(usable_tables & field->table->map))
{
if (!eq_func || !value || value->type() != Item::NULL_ITEM ||
!field->table->maybe_null || field->null_ptr)
return; // Can't use left join optimize
exists_optimize=1;
exists_optimize= KEY_OPTIMIZE_EXISTS;
}
else
{
@ -1883,7 +1951,8 @@ add_key_field(KEY_FIELD **key_fields,uint and_level,
return; // Can't be used as eq key
}
/* Save the following cases:
/*
Save the following cases:
Field op constant
Field LIKE constant where constant doesn't start with a wildcard
Field = field2 where field2 is in a different table
@ -1895,8 +1964,10 @@ add_key_field(KEY_FIELD **key_fields,uint and_level,
if (value->const_item())
stat[0].const_keys |= possible_keys;
/* We can't always use indexes when comparing a string index to a
number. cmp_type() is checked to allow compare of dates to numbers */
/*
We can't always use indexes when comparing a string index to a
number. cmp_type() is checked to allow compare of dates to numbers
*/
if (!eq_func ||
field->result_type() == STRING_RESULT &&
value->result_type() != STRING_RESULT &&
@ -1908,8 +1979,8 @@ add_key_field(KEY_FIELD **key_fields,uint and_level,
(*key_fields)->field= field;
(*key_fields)->eq_func= eq_func;
(*key_fields)->val= value;
(*key_fields)->level=(*key_fields)->const_level=and_level;
(*key_fields)->exists_optimize=exists_optimize;
(*key_fields)->level= and_level;
(*key_fields)->optimize= exists_optimize;
(*key_fields)++;
}
@ -1929,12 +2000,7 @@ add_key_fields(JOIN_TAB *stat,KEY_FIELD **key_fields,uint *and_level,
while ((item=li++))
add_key_fields(stat,key_fields,and_level,item,usable_tables);
for (; org_key_fields != *key_fields ; org_key_fields++)
{
if (org_key_fields->const_level == org_key_fields->level)
org_key_fields->const_level=org_key_fields->level= *and_level;
else
org_key_fields->const_level= *and_level;
}
org_key_fields->level= *and_level;
}
else
{
@ -2039,7 +2105,7 @@ add_key_part(DYNAMIC_ARRAY *keyuse_array,KEY_FIELD *key_field)
TABLE *form= field->table;
KEYUSE keyuse;
if (key_field->eq_func && !key_field->exists_optimize)
if (key_field->eq_func && !(key_field->optimize & KEY_OPTIMIZE_EXISTS))
{
for (uint key=0 ; key < form->keys ; key++)
{
@ -2057,7 +2123,9 @@ add_key_part(DYNAMIC_ARRAY *keyuse_array,KEY_FIELD *key_field)
keyuse.val = key_field->val;
keyuse.key = key;
keyuse.keypart=part;
keyuse.keypart_map= (key_part_map) 1 << part;
keyuse.used_tables=key_field->val->used_tables();
keyuse.optimize= key_field->optimize & KEY_OPTIMIZE_REF_OR_NULL;
VOID(insert_dynamic(keyuse_array,(gptr) &keyuse));
}
}
@ -2141,16 +2209,23 @@ add_ft_keys(DYNAMIC_ARRAY *keyuse_array,
VOID(insert_dynamic(keyuse_array,(gptr) &keyuse));
}
static int
sort_keyuse(KEYUSE *a,KEYUSE *b)
{
int res;
if (a->table->tablenr != b->table->tablenr)
return (int) (a->table->tablenr - b->table->tablenr);
if (a->key != b->key)
return (int) (a->key - b->key);
if (a->keypart != b->keypart)
return (int) (a->keypart - b->keypart);
return test(a->used_tables) - test(b->used_tables); // Place const first
// Place const values before other ones
if ((res= test(a->used_tables) - test(b->used_tables)))
return res;
/* Place rows that are not 'OPTIMIZE_REF_OR_NULL' first */
return (int) ((a->optimize & KEY_OPTIMIZE_REF_OR_NULL) -
(b->optimize & KEY_OPTIMIZE_REF_OR_NULL));
}
@ -2166,8 +2241,6 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
SELECT_LEX *select_lex)
{
uint and_level,i,found_eq_constant;
{
KEY_FIELD *key_fields,*end;
if (!(key_fields=(KEY_FIELD*)
@ -2190,7 +2263,6 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
/* fill keyuse with found key parts */
for (KEY_FIELD *field=key_fields ; field != end ; field++)
add_key_part(keyuse,field);
}
if (select_lex->ftfunc_list->elements)
{
@ -2198,9 +2270,10 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
}
/*
Remove ref if there is a keypart which is a ref and a const.
Remove keyparts without previous keyparts.
Special treatment for ft-keys.
Remove the following things from KEYUSE:
- ref if there is a keypart which is a ref and a const.
- keyparts without previous keyparts.
*/
if (keyuse->elements)
{
@ -2218,8 +2291,7 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
for (i=0 ; i < keyuse->elements-1 ; i++,use++)
{
if (!use->used_tables)
use->table->const_key_parts[use->key] |=
(key_part_map) 1 << use->keypart;
use->table->const_key_parts[use->key]|= use->keypart_map;
if (use->keypart != FT_KEYPART)
{
if (use->key == prev->key && use->table == prev->table)
@ -2248,6 +2320,41 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
return FALSE;
}
/*
Update some values in keyuse for faster find_best_combination() loop
*/
static void optimize_keyuse(JOIN *join, DYNAMIC_ARRAY *keyuse_array)
{
KEYUSE *end,*keyuse= dynamic_element(keyuse_array, 0, KEYUSE*);
for (end= keyuse+ keyuse_array->elements ; keyuse < end ; keyuse++)
{
table_map map;
/*
If we find a ref, assume this table matches a proportional
part of this table.
For example 100 records matching a table with 5000 records
gives 5000/100 = 50 records per key
Constant tables are ignored.
To avoid bad matches, we don't make ref_table_rows less than 100.
*/
keyuse->ref_table_rows= ~(table_map) 0; // If no ref
if (keyuse->used_tables &
(map= (keyuse->used_tables & ~join->const_table_map &
~OUTER_REF_TABLE_BIT)))
{
uint tablenr;
for (tablenr=0 ; ! (map & 1) ; map>>=1, tablenr++) ;
if (map == 1) // Only one table
{
TABLE *tmp_table=join->all_tables[tablenr];
keyuse->ref_table_rows= max(tmp_table->file->records, 100);
}
}
}
}
/*****************************************************************************
Go through all combinations of not marked tables and find the one
@ -2334,7 +2441,7 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
uint max_key_part=0;
/* Test how we can use keys */
rec= s->records/MATCHING_ROWS_IN_OTHER_TABLE; /* Assumed records/key */
rec= s->records/MATCHING_ROWS_IN_OTHER_TABLE; // Assumed records/key
for (keyuse=s->keyuse ; keyuse->table == table ;)
{
key_map found_part=0;
@ -2342,44 +2449,27 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
uint key=keyuse->key;
KEY *keyinfo=table->key_info+key;
bool ft_key=(keyuse->keypart == FT_KEYPART);
uint found_ref_or_null= 0;
/* Calculate how many key segments of the current key we can use */
start_key=keyuse;
do
{
uint keypart=keyuse->keypart;
uint found_part_ref_or_null= KEY_OPTIMIZE_REF_OR_NULL;
do
{
if (!ft_key)
if (!(rest_tables & keyuse->used_tables) &&
!(found_ref_or_null & keyuse->optimize))
{
table_map map;
if (!(rest_tables & keyuse->used_tables))
{
found_part|= (key_part_map) 1 << keypart;
found_part|=keyuse->keypart_map;
found_ref|= keyuse->used_tables;
}
/*
If we find a ref, assume this table matches a proportional
part of this table.
For example 100 records matching a table with 5000 records
gives 5000/100 = 50 records per key
Constant tables are ignored and to avoid bad matches,
we don't make rec less than 100.
*/
if (keyuse->used_tables &
(map=(keyuse->used_tables & ~join->const_table_map &
~OUTER_REF_TABLE_BIT)))
{
uint tablenr;
for (tablenr=0 ; ! (map & 1) ; map>>=1, tablenr++) ;
if (map == 1) // Only one table
{
TABLE *tmp_table=join->all_tables[tablenr];
if (rec > tmp_table->file->records && rec > 100)
rec=max(tmp_table->file->records,100);
}
}
if (rec > keyuse->ref_table_rows)
rec= keyuse->ref_table_rows;
found_part_ref_or_null&= keyuse->optimize;
}
keyuse++;
found_ref_or_null|= found_part_ref_or_null;
} while (keyuse->table == table && keyuse->key == key &&
keyuse->keypart == keypart);
} while (keyuse->table == table && keyuse->key == key);
@ -2389,8 +2479,8 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
*/
if (!found_part && !ft_key)
continue; // Nothing usable found
if (rec == 0)
rec=1L; // Fix for small tables
if (rec < MATCHING_ROWS_IN_OTHER_TABLE)
rec= MATCHING_ROWS_IN_OTHER_TABLE; // Fix for small tables
/*
ft-keys require special treatment
@ -2409,7 +2499,8 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
/*
Check if we found full key
*/
if (found_part == PREV_BITS(uint,keyinfo->key_parts))
if (found_part == PREV_BITS(uint,keyinfo->key_parts) &&
!found_ref_or_null)
{ /* use eq key */
max_key_part= (uint) ~0;
if ((keyinfo->flags & (HA_NOSAME | HA_NULL_PART_KEY)) == HA_NOSAME)
@ -2462,7 +2553,8 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
Set tmp to (previous record count) * (records / combination)
*/
if ((found_part & 1) &&
!(table->file->index_flags(key) & HA_ONLY_WHOLE_INDEX))
(!(table->file->index_flags(key) & HA_ONLY_WHOLE_INDEX) ||
found_part == PREV_BITS(uint,keyinfo->key_parts)))
{
max_key_part=max_part_bit(found_part);
/*
@ -2512,6 +2604,12 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
}
records=(ulong) tmp;
}
if (found_ref_or_null)
{
/* We need to do two key searches to find key */
tmp*= 2.0;
records*= 2.0;
}
}
if (table->used_keys & ((key_map) 1 << key))
{
@ -2761,9 +2859,7 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
TABLE *table;
KEY *keyinfo;
/*
Use best key from find_best
*/
/* Use best key from find_best */
table=j->table;
key=keyuse->key;
keyinfo=table->key_info+key;
@ -2779,14 +2875,22 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
else
{
keyparts=length=0;
uint found_part_ref_or_null= 0;
/*
Calculate length for the used key
Stop if there is a missing key part or when we find second key_part
with KEY_OPTIMIZE_REF_OR_NULL
*/
do
{
if (!((~used_tables) & keyuse->used_tables))
if (!(~used_tables & keyuse->used_tables))
{
if (keyparts == keyuse->keypart)
if (keyparts == keyuse->keypart &&
!(found_part_ref_or_null & keyuse->optimize))
{
keyparts++;
length+= keyinfo->key_part[keyuse->keypart].store_length;
found_part_ref_or_null|= keyuse->optimize;
}
}
keyuse++;
@ -2810,7 +2914,7 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
keyuse=org_keyuse;
store_key **ref_key= j->ref.key_copy;
byte *key_buff=j->ref.key_buff;
byte *key_buff=j->ref.key_buff, *null_ref_key= 0;
if (ftkey)
{
j->ref.items[0]=((Item_func*)(keyuse->val))->key_item();
@ -2838,9 +2942,7 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
maybe_null ? (char*) key_buff : 0,
keyinfo->key_part[i].length, keyuse->val);
if (thd->is_fatal_error)
{
return TRUE;
}
tmp.copy();
}
else
@ -2848,17 +2950,25 @@ static bool create_ref_for_key(JOIN *join, JOIN_TAB *j, KEYUSE *org_keyuse,
keyuse,join->const_table_map,
&keyinfo->key_part[i],
(char*) key_buff,maybe_null);
/* Remmeber if we are going to use REF_OR_NULL */
if (keyuse->optimize & KEY_OPTIMIZE_REF_OR_NULL)
null_ref_key= key_buff;
key_buff+=keyinfo->key_part[i].store_length;
}
} /* not ftkey */
*ref_key=0; // end_marker
if (j->type == JT_FT) /* no-op */;
else if (j->type == JT_CONST)
if (j->type == JT_FT)
return 0;
if (j->type == JT_CONST)
j->table->const_table= 1;
else if (((keyinfo->flags & (HA_NOSAME | HA_NULL_PART_KEY))
!= HA_NOSAME) ||
keyparts != keyinfo->key_parts)
j->type=JT_REF; /* Must read with repeat */
!= HA_NOSAME) || keyparts != keyinfo->key_parts ||
null_ref_key)
{
/* Must read with repeat */
j->type= null_ref_key ? JT_REF_OR_NULL : JT_REF;
j->null_ref_key= null_ref_key;
}
else if (ref_key == j->ref.key_copy)
{
/*
@ -3169,6 +3279,7 @@ make_join_readinfo(JOIN *join, uint options)
table->file->extra(HA_EXTRA_KEYREAD);
}
break;
case JT_REF_OR_NULL:
case JT_REF:
table->status=STATUS_NO_RECORD;
if (tab->select)
@ -3179,14 +3290,22 @@ make_join_readinfo(JOIN *join, uint options)
delete tab->quick;
tab->quick=0;
table->file->index_init(tab->ref.key);
tab->read_first_record= join_read_always_key;
tab->read_record.read_record= join_read_next_same;
if (table->used_keys & ((key_map) 1 << tab->ref.key) &&
!table->no_keyread)
{
table->key_read=1;
table->file->extra(HA_EXTRA_KEYREAD);
}
if (tab->type == JT_REF)
{
tab->read_first_record= join_read_always_key;
tab->read_record.read_record= join_read_next_same;
}
else
{
tab->read_first_record= join_read_always_key_or_null;
tab->read_record.read_record= join_read_next_same_or_null;
}
break;
case JT_FT:
table->status=STATUS_NO_RECORD;
@ -5197,6 +5316,40 @@ flush_cached_records(JOIN *join,JOIN_TAB *join_tab,bool skipp_last)
The different ways to read a record
Returns -1 if row was not found, 0 if row was found and 1 on errors
*****************************************************************************/
/* Help function when we get some an error from the table handler */
static int report_error(TABLE *table, int error)
{
if (error == HA_ERR_END_OF_FILE || error == HA_ERR_KEY_NOT_FOUND)
{
table->status= STATUS_GARBAGE;
return -1; // key not found; ok
}
/*
Locking reads can legally return also these errors, do not
print them to the .err log
*/
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("Got error %d when reading table '%s'",
error, table->path);
table->file->print_error(error,MYF(0));
return 1;
}
static int safe_index_read(JOIN_TAB *tab)
{
int error;
TABLE *table= tab->table;
if ((error=table->file->index_read(table->record[0],
tab->ref.key_buff,
tab->ref.key_length, HA_READ_KEY_EXACT)))
return report_error(table, error);
return 0;
}
static int
join_read_const_table(JOIN_TAB *tab, POSITION *pos)
{
@ -5251,10 +5404,7 @@ join_read_system(JOIN_TAB *tab)
table->primary_key)))
{
if (error != HA_ERR_END_OF_FILE)
{
table->file->print_error(error,MYF(0));
return 1;
}
return report_error(table, error);
table->null_row=1; // This is ok.
empty_record(table); // Make empty record
return -1;
@ -5288,15 +5438,7 @@ join_read_const(JOIN_TAB *tab)
table->null_row=1;
empty_record(table);
if (error != HA_ERR_KEY_NOT_FOUND)
{
/* Locking reads can legally return also these errors, do not
print them to the .err log */
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("read_const: Got error %d when reading table %s",
error, table->path);
table->file->print_error(error,MYF(0));
return 1;
}
return report_error(table, error);
return -1;
}
store_record(table,record[1]);
@ -5329,12 +5471,7 @@ join_read_key(JOIN_TAB *tab)
tab->ref.key_buff,
tab->ref.key_length,HA_READ_KEY_EXACT);
if (error && error != HA_ERR_KEY_NOT_FOUND)
{
sql_print_error("read_key: Got error %d when reading table '%s'",error,
table->path);
table->file->print_error(error,MYF(0));
return 1;
}
return report_error(table, error);
}
table->null_row=0;
return table->status ? -1 : 0;
@ -5354,18 +5491,13 @@ join_read_always_key(JOIN_TAB *tab)
tab->ref.key_length,HA_READ_KEY_EXACT)))
{
if (error != HA_ERR_KEY_NOT_FOUND)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("read_const: Got error %d when reading table %s",error,
table->path);
table->file->print_error(error,MYF(0));
return 1;
}
return report_error(table, error);
return -1; /* purecov: inspected */
}
return 0;
}
/*
This function is used when optimizing away ORDER BY in
SELECT * FROM t1 WHERE a=1 ORDER BY a DESC,b DESC
@ -5384,13 +5516,7 @@ join_read_last_key(JOIN_TAB *tab)
tab->ref.key_length)))
{
if (error != HA_ERR_KEY_NOT_FOUND)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("read_const: Got error %d when reading table %s",error,
table->path);
table->file->print_error(error,MYF(0));
return 1;
}
return report_error(table, error);
return -1; /* purecov: inspected */
}
return 0;
@ -5417,19 +5543,14 @@ join_read_next_same(READ_RECORD *info)
tab->ref.key_length)))
{
if (error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("read_next: Got error %d when reading table %s",error,
table->path);
table->file->print_error(error,MYF(0));
return 1;
}
return report_error(table, error);
table->status= STATUS_GARBAGE;
return -1;
}
return 0;
}
static int
join_read_prev_same(READ_RECORD *info)
{
@ -5438,22 +5559,8 @@ join_read_prev_same(READ_RECORD *info)
JOIN_TAB *tab=table->reginfo.join_tab;
if ((error=table->file->index_prev(table->record[0])))
{
if (error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("read_next: Got error %d when reading table %s",error,
table->path);
table->file->print_error(error,MYF(0));
error= 1;
}
else
{
table->status= STATUS_GARBAGE;
error= -1;
}
}
else if (key_cmp(table, tab->ref.key_buff, tab->ref.key,
return report_error(table, error);
if (key_cmp(table, tab->ref.key_buff, tab->ref.key,
tab->ref.key_length))
{
table->status=STATUS_NOT_FOUND;
@ -5491,6 +5598,7 @@ join_init_read_record(JOIN_TAB *tab)
return (*tab->read_record.read_record)(&tab->read_record);
}
static int
join_read_first(JOIN_TAB *tab)
{
@ -5508,17 +5616,10 @@ join_read_first(JOIN_TAB *tab)
tab->read_record.file=table->file;
tab->read_record.index=tab->index;
tab->read_record.record=table->record[0];
error=tab->table->file->index_first(tab->table->record[0]);
if (error)
if ((error=tab->table->file->index_first(tab->table->record[0])))
{
if (error != HA_ERR_KEY_NOT_FOUND && error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("read_first_with_key: Got error %d when reading table",
error);
table->file->print_error(error,MYF(0));
return 1;
}
report_error(table, error);
return -1;
}
return 0;
@ -5528,23 +5629,13 @@ join_read_first(JOIN_TAB *tab)
static int
join_read_next(READ_RECORD *info)
{
int error=info->file->index_next(info->record);
if (error)
{
if (error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error(
"read_next_with_key: Got error %d when reading table %s",
error, info->table->path);
info->file->print_error(error,MYF(0));
return 1;
}
return -1;
}
int error;
if ((error=info->file->index_next(info->record)))
return report_error(info->table, error);
return 0;
}
static int
join_read_last(JOIN_TAB *tab)
{
@ -5562,19 +5653,8 @@ join_read_last(JOIN_TAB *tab)
tab->read_record.file=table->file;
tab->read_record.index=tab->index;
tab->read_record.record=table->record[0];
error=tab->table->file->index_last(tab->table->record[0]);
if (error)
{
if (error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("read_last_with_key: Got error %d when reading table",
error, table->path);
table->file->print_error(error,MYF(0));
return 1;
}
return -1;
}
if ((error= tab->table->file->index_last(tab->table->record[0])))
return report_error(table, error);
return 0;
}
@ -5582,20 +5662,9 @@ join_read_last(JOIN_TAB *tab)
static int
join_read_prev(READ_RECORD *info)
{
int error=info->file->index_prev(info->record);
if (error)
{
if (error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error(
"read_prev_with_key: Got error %d when reading table: %s",
error,info->table->path);
info->file->print_error(error,MYF(0));
return 1;
}
return -1;
}
int error;
if ((error= info->file->index_prev(info->record)))
return report_error(info->table, error);
return 0;
}
@ -5612,42 +5681,57 @@ join_ft_read_first(JOIN_TAB *tab)
#endif
table->file->ft_init();
error=table->file->ft_read(table->record[0]);
if (error)
{
if (error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("ft_read_first: Got error %d when reading table %s",
error, table->path);
table->file->print_error(error,MYF(0));
return 1;
}
return -1;
}
if ((error= table->file->ft_read(table->record[0])))
return report_error(table, error);
return 0;
}
static int
join_ft_read_next(READ_RECORD *info)
{
int error=info->file->ft_read(info->table->record[0]);
if (error)
{
if (error != HA_ERR_END_OF_FILE)
{
if (error != HA_ERR_LOCK_DEADLOCK && error != HA_ERR_LOCK_WAIT_TIMEOUT)
sql_print_error("ft_read_next: Got error %d when reading table %s",
error, info->table->path);
info->file->print_error(error,MYF(0));
return 1;
}
return -1;
}
int error;
if ((error= info->file->ft_read(info->table->record[0])))
return report_error(info->table, error);
return 0;
}
/*
Reading of key with key reference and one part that may be NULL
*/
static int
join_read_always_key_or_null(JOIN_TAB *tab)
{
int res;
/* First read according to key which is NOT NULL */
*tab->null_ref_key=0;
if ((res= join_read_always_key(tab)) >= 0)
return res;
/* Then read key with null value */
*tab->null_ref_key= 1;
return safe_index_read(tab);
}
static int
join_read_next_same_or_null(READ_RECORD *info)
{
int error;
if ((error= join_read_next_same(info)) >= 0)
return error;
JOIN_TAB *tab= info->table->reginfo.join_tab;
/* Test if we have already done a read after null key */
if (*tab->null_ref_key)
return -1; // All keys read
*tab->null_ref_key= 1; // Read null key
return safe_index_read(tab);
}
/*****************************************************************************
The different end of select functions
These functions returns < 0 when end is reached, 0 on ok and > 0 if a
@ -6374,10 +6458,13 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
}
ref_key= -1;
if (tab->ref.key >= 0) // Constant range in WHERE
/* Test if constant range in WHERE */
if (tab->ref.key >= 0)
{
ref_key= tab->ref.key;
ref_key_parts= tab->ref.key_parts;
if (tab->type == JT_REF_OR_NULL)
DBUG_RETURN(0);
}
else if (select && select->quick) // Range found by opt_range
{

7
sql/sql_select.h
View File

@ -27,8 +27,10 @@
typedef struct keyuse_t {
TABLE *table;
Item *val; /* or value if no field */
uint key,keypart;
table_map used_tables;
uint key, keypart, optimize;
key_map keypart_map;
ha_rows ref_table_rows;
} KEYUSE;
class store_key;
@ -73,7 +75,7 @@ typedef struct st_join_cache {
*/
enum join_type { JT_UNKNOWN,JT_SYSTEM,JT_CONST,JT_EQ_REF,JT_REF,JT_MAYBE_REF,
JT_ALL, JT_RANGE, JT_NEXT, JT_FT};
JT_ALL, JT_RANGE, JT_NEXT, JT_FT, JT_REF_OR_NULL};
class JOIN;
@ -85,6 +87,7 @@ typedef struct st_join_table {
QUICK_SELECT *quick;
Item *on_expr;
const char *info;
byte *null_ref_key;
int (*read_first_record)(struct st_join_table *tab);
int (*next_select)(JOIN *,struct st_join_table *,bool);
READ_RECORD read_record;

46
sql/sql_show.cc
View File

@ -27,8 +27,6 @@
#include "ha_berkeley.h" // For berkeley_show_logs
#endif
/* extern "C" pthread_mutex_t THR_LOCK_keycache; */
static const char *grant_names[]={
"select","insert","update","delete","create","drop","reload","shutdown",
"process","file","grant","references","index","alter"};
@ -43,15 +41,11 @@ static int mysql_find_files(THD *thd,List<char> *files, const char *db,
static int
store_create_info(THD *thd, TABLE *table, String *packet);
static void
append_identifier(THD *thd, String *packet, const char *name);
extern struct st_VioSSLAcceptorFd * ssl_acceptor_fd;
/****************************************************************************
** Send list of databases
** A database is a directory in the mysql_data_home directory
****************************************************************************/
/*
Report list of databases
A database is a directory in the mysql_data_home directory
*/
int
mysqld_show_dbs(THD *thd,const char *wild)
@ -1002,8 +996,8 @@ mysqld_dump_create_info(THD *thd, TABLE *table, int fd)
}
static void
append_identifier(THD *thd, String *packet, const char *name)
void
append_identifier(THD *thd, String *packet, const char *name, uint length)
{
char qtype;
if (thd->variables.sql_mode & MODE_ANSI_QUOTES)
@ -1014,12 +1008,12 @@ append_identifier(THD *thd, String *packet, const char *name)
if (thd->options & OPTION_QUOTE_SHOW_CREATE)
{
packet->append(&qtype, 1);
packet->append(name, 0, system_charset_info);
packet->append(name, length, system_charset_info);
packet->append(&qtype, 1);
}
else
{
packet->append(name, 0, system_charset_info);
packet->append(name, length, system_charset_info);
}
}
@ -1050,7 +1044,7 @@ store_create_info(THD *thd, TABLE *table, String *packet)
packet->append("CREATE TEMPORARY TABLE ", 23);
else
packet->append("CREATE TABLE ", 13);
append_identifier(thd,packet,table->real_name);
append_identifier(thd,packet, table->real_name, strlen(table->real_name));
packet->append(" (\n", 3);
Field **ptr,*field;
@ -1061,7 +1055,7 @@ store_create_info(THD *thd, TABLE *table, String *packet)
uint flags = field->flags;
packet->append(" ", 2);
append_identifier(thd,packet,field->field_name);
append_identifier(thd,packet,field->field_name, strlen(field->field_name));
packet->append(' ');
// check for surprises from the previous call to Field::sql_type()
if (type.ptr() != tmp)
@ -1152,7 +1146,7 @@ store_create_info(THD *thd, TABLE *table, String *packet)
packet->append("KEY ", 4);
if (!found_primary)
append_identifier(thd, packet, key_info->name);
append_identifier(thd, packet, key_info->name, strlen(key_info->name));
if (!(thd->variables.sql_mode & MODE_NO_KEY_OPTIONS) &&
!limited_mysql_mode && !foreign_db_mode)
@ -1174,7 +1168,8 @@ store_create_info(THD *thd, TABLE *table, String *packet)
packet->append(',');
if (key_part->field)
append_identifier(thd,packet,key_part->field->field_name);
append_identifier(thd,packet,key_part->field->field_name,
strlen(key_part->field->field_name));
if (!key_part->field ||
(key_part->length !=
table->field[key_part->fieldnr-1]->key_length() &&
@ -1190,16 +1185,16 @@ store_create_info(THD *thd, TABLE *table, String *packet)
packet->append(')');
}
/*
Get possible foreign key definitions stored in InnoDB and append them
to the CREATE TABLE statement
*/
handler *file = table->file;
/* Get possible foreign key definitions stored in InnoDB and append them
to the CREATE TABLE statement */
char* for_str= file->get_foreign_key_create_info();
if (for_str) {
if (for_str)
{
packet->append(for_str, strlen(for_str));
file->free_foreign_key_create_info(for_str);
}
@ -1267,7 +1262,8 @@ store_create_info(THD *thd, TABLE *table, String *packet)
{
char buff[100];
sprintf(buff," RAID_TYPE=%s RAID_CHUNKS=%d RAID_CHUNKSIZE=%ld",
my_raid_type(file->raid_type), file->raid_chunks, file->raid_chunksize/RAID_BLOCK_SIZE);
my_raid_type(file->raid_type), file->raid_chunks,
file->raid_chunksize/RAID_BLOCK_SIZE);
packet->append(buff);
}
}

1
sql/sql_yacc.yy
View File

@ -1597,6 +1597,7 @@ alter_list_item:
LEX *lex=Lex;
lex->length=lex->dec=0; lex->type=0; lex->interval=0;
lex->default_value=lex->comment=0;
lex->charset= NULL;
lex->simple_alter=0;
}
type opt_attribute

4
sql/table.cc
View File

@ -395,7 +395,9 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
}
else
{
if (!(charset=get_charset((uint) strpos[14], MYF(0))))
if (!strpos[14])
charset= &my_charset_bin;
else if (!(charset=get_charset((uint) strpos[14], MYF(0))))
charset= (outparam->table_charset ? outparam->table_charset:
default_charset_info);
}

4
sql/unireg.cc
View File

@ -460,8 +460,10 @@ static bool pack_fields(File file,List<create_field> &create_fields)
buff[13]= (uchar) field->sql_type;
if (field->sql_type == FIELD_TYPE_GEOMETRY)
buff[14]= (uchar) field->geom_type;
else
else if (field->charset)
buff[14]= (uchar) field->charset->number;
else
buff[14]= 0; // Numerical
int2store(buff+15, field->comment.length);
comment_length+= field->comment.length;
set_if_bigger(int_count,field->interval_id);