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

subselet in delete (SCRUM)

Browse Source 
mysql-test/r/subselect.result:
  subselects in delete test
mysql-test/t/subselect.test:
  subselects in delete test
sql/sql_delete.cc:
  subselet in delete
This commit is contained in:
unknown 2002-11-25 21:27:14 +02:00
parent 52f18046c4
commit 30d1b14361
3 changed files with 36 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
mysql-test/r/subselect.result
View File

@ -335,3 +335,22 @@ a b
1 21
2 22
drop table t1, t2;
drop table if exists t1, t2;
create table t1 (a int NOT NULL, b int, primary key (a));
create table t2 (a int NOT NULL, b int, primary key (a));
insert into t1 values (0, 10),(1, 11),(2, 12);
insert into t2 values (1, 21),(2, 12),(3, 23);
select * from t1;
a b
0 10
1 11
2 12
select * from t1 where b = (select b from t2 where t1.a = t2.a);
a b
2 12
delete from t1 where b = (select b from t2 where t1.a = t2.a);
select * from t1;
a b
0 10
1 11
drop table t1, t2;

11
mysql-test/t/subselect.test
View File

@ -215,3 +215,14 @@ update t1 set b= (select b from t2 where t1.a = t2.a);
select * from t1;
drop table t1, t2;
#delete with subselects
drop table if exists t1, t2;
create table t1 (a int NOT NULL, b int, primary key (a));
create table t2 (a int NOT NULL, b int, primary key (a));
insert into t1 values (0, 10),(1, 11),(2, 12);
insert into t2 values (1, 21),(2, 12),(3, 23);
select * from t1;
select * from t1 where b = (select b from t2 where t1.a = t2.a);
delete from t1 where b = (select b from t2 where t1.a = t2.a);
select * from t1;
drop table t1, t2;

8
sql/sql_delete.cc
View File

@ -37,14 +37,18 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, ORDER *order,
bool using_limit=limit != HA_POS_ERROR;
bool transactional_table, log_delayed, safe_update, const_cond;
ha_rows deleted;
TABLE_LIST *delete_table_list= (TABLE_LIST*)
thd->lex.select_lex.table_list.first;
DBUG_ENTER("mysql_delete");
if (!(table = open_ltable(thd, table_list, table_list->lock_type)))
if ((open_and_lock_tables(thd, table_list)))
DBUG_RETURN(-1);
fix_tables_pointers(&thd->lex.select_lex);
table= table_list->table;
table->file->info(HA_STATUS_VARIABLE | HA_STATUS_NO_LOCK);
thd->proc_info="init";
table->map=1;
if (setup_conds(thd,table_list,&conds) ||
if (setup_conds(thd, delete_table_list, &conds) ||
setup_ftfuncs(&thd->lex.select_lex))
DBUG_RETURN(-1);