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A fix (bug #8489: Strange auto_increment behaviour with HEAP table).

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This commit is contained in:
ramil@mysql.com 2005-03-15 13:32:12 +04:00
parent 18343b9454
commit 46613bafbe
5 changed files with 82 additions and 6 deletions
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3
heap/hp_create.c
View file

@ -137,6 +137,8 @@ int heap_create(const char *name, uint keys, HP_KEYDEF *keydef,
keyinfo->write_key= hp_write_key;
keyinfo->hash_buckets= 0;
}
if ((keyinfo->flag & HA_AUTO_KEY) && create_info->with_auto_increment)
share->auto_key= i + 1;
}
share->min_records= min_records;
share->max_records= max_records;
@ -147,7 +149,6 @@ int heap_create(const char *name, uint keys, HP_KEYDEF *keydef,
share->keys= keys;
share->max_key_length= max_length;
share->changed= 0;
share->auto_key= create_info->auto_key;
share->auto_key_type= create_info->auto_key_type;
share->auto_increment= create_info->auto_increment;
/* Must be allocated separately for rename to work */

2
include/heap.h
View file

@ -183,10 +183,10 @@ typedef struct st_heap_info
typedef struct st_heap_create_info
{
uint auto_key;
uint auto_key_type;
ulong max_table_size;
ulonglong auto_increment;
my_bool with_auto_increment;
} HP_CREATE_INFO;
/* Prototypes for heap-functions */

42
mysql-test/r/heap.result
View file

@ -249,3 +249,45 @@ a
3
2
drop table t1;
create table t1 (a bigint unsigned auto_increment primary key, b int,
key (b, a)) engine=heap;
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
select * from t1;
a b
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
drop table t1;
create table t1 (a int not null, b int not null auto_increment,
primary key(a, b), key(b)) engine=heap;
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
select * from t1;
a b
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
drop table t1;

29
mysql-test/t/heap.test
View file

@ -195,3 +195,32 @@ delete from t1 where a is null;
insert into t1 values ('2'), ('3');
select * from t1;
drop table t1;
#
# Bug #8489: Strange auto_increment behaviour
#
create table t1 (a bigint unsigned auto_increment primary key, b int,
key (b, a)) engine=heap;
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
insert t1 (b) values (1);
select * from t1;
drop table t1;
create table t1 (a int not null, b int not null auto_increment,
primary key(a, b), key(b)) engine=heap;
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
insert t1 (a) values (1);
select * from t1;
drop table t1;

12
sql/ha_heap.cc
View file

@ -446,6 +446,7 @@ int ha_heap::create(const char *name, TABLE *table_arg,
HA_KEYSEG *seg;
char buff[FN_REFLEN];
int error;
bool found_real_auto_increment= 0;
for (key= parts= 0; key < table_arg->keys; key++)
parts+= table_arg->key_info[key].key_parts;
@ -506,17 +507,20 @@ int ha_heap::create(const char *name, TABLE *table_arg,
seg->null_bit= 0;
seg->null_pos= 0;
}
// We have to store field->key_type() as seg->type can differ from it
if (field->flags & AUTO_INCREMENT_FLAG)
{
auto_key= key + 1;
auto_key_type= field->key_type();
}
}
}
if (table_arg->found_next_number_field)
{
keydef[table_arg->next_number_index].flag|= HA_AUTO_KEY;
found_real_auto_increment= table_arg->next_number_key_offset == 0;
}
mem_per_row+= MY_ALIGN(table_arg->reclength + 1, sizeof(char*));
HP_CREATE_INFO hp_create_info;
hp_create_info.auto_key= auto_key;
hp_create_info.auto_key_type= auto_key_type;
hp_create_info.with_auto_increment= found_real_auto_increment;
hp_create_info.auto_increment= (create_info->auto_increment_value ?
create_info->auto_increment_value - 1 : 0);
hp_create_info.max_table_size=current_thd->variables.max_heap_table_size;