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Remove FORCE_INIT_OF_VARS when compiling for valgrind/purify to spot wrong LINT_INIT() options

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Fixed bug in ALTER TABLE ... MODIFY integer-column
Added ref_or_null optimization (needed for subqueries)
This commit is contained in:
monty@mashka.mysql.fi 2003-06-30 13:23:54 +03:00
parent 01c2c0c326
commit dbebed97e4
10 changed files with 500 additions and 270 deletions
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2
BUILD/compile-pentium-valgrind-max
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@ -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"

6
mysql-test/r/distinct.result
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@ -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

110
mysql-test/r/null_key.result
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@ -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
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@ -827,7 +827,7 @@ 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);

35
mysql-test/t/null_key.test
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@ -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

599
sql/sql_select.cc
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File diff suppressed because it is too large Load Diff

7
sql/sql_select.h
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@ -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;

1
sql/sql_yacc.yy
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@ -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
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@ -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
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@ -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);