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Fixed bug#19225: unchecked error results in server crash

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In multi-table delete a table for delete can't be used for selecting in
subselects. Appropriate error was raised but wasn't checked which leads to a
crash at the execution phase.

The mysql_execute_command() now checks for errors before executing select
for multi-delete.
This commit is contained in:
evgen@moonbone.local
2006-05-29 00:32:59 +04:00
parent 7667b271d8
commit 1f30bf5a33
3 changed files with 15 additions and 2 deletions
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5
mysql-test/r/multi_update.result
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@ -475,3 +475,8 @@ aclid bigint, index idx_acl(aclid)
insert into t2 values(1,null);
delete t2, t1 from t2 left join t1 on (t2.aclid=t1.aclid) where t2.refid='1';
drop table t1, t2;
create table t1(a int);
create table t2(a int);
delete from t1,t2 using t1,t2 where t1.a=(select a from t1);
ERROR HY000: You can't specify target table 't1' for update in FROM clause
drop table t1, t2;