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Fix for BUG#7885

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mysql-test/r/subselect.result:
  Testcase for BUG#7885
mysql-test/t/subselect.test:
  Testcase for BUG#7885
sql/item_subselect.cc:
  Fix for BUG#7885: In Item_subselect::fix_fields, return error if engine->prepare fails.
  Also removed redundant code line.
This commit is contained in:
unknown 2005-01-18 17:26:05 +03:00
parent e46d235a08
commit 2e50981af9
3 changed files with 21 additions and 1 deletions
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8
mysql-test/r/subselect.result
View File

@ -2152,3 +2152,11 @@ WHERE f1 <> ALL ( SELECT SUM(f1) AS sf1 FROM t2 HAVING sf1 > 10000);
f1
NULL
1
drop table t1,t2;
create table t1 (a1 int);
create table t2 (b1 int);
select * from t1 where a2 > any(select b1 from t2);
ERROR 42S22: Unknown column 'a2' in 'scalar IN/ALL/ANY subquery'
select * from t1 where a1 > any(select b1 from t2);
a1
drop table t1,t2;

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

@ -1412,3 +1412,14 @@ SELECT f1 FROM t1
SELECT f1 FROM t1
WHERE f1 <> ALL ( SELECT SUM(f1) AS sf1 FROM t2 HAVING sf1 > 10000);
drop table t1,t2;
# Test for BUG#7885: Server crash when 'any' subselect compared to
# non-existant field.
create table t1 (a1 int);
create table t2 (b1 int);
--error 1054
select * from t1 where a2 > any(select b1 from t2);
select * from t1 where a1 > any(select b1 from t2);
drop table t1,t2;

3
sql/item_subselect.cc
View File

@ -177,6 +177,8 @@ bool Item_subselect::fix_fields(THD *thd_param, TABLE_LIST *tables, Item **ref)
}
fix_length_and_dec();
}
else
return 1;
uint8 uncacheable= engine->uncacheable();
if (uncacheable)
{
@ -264,7 +266,6 @@ Item_singlerow_subselect::Item_singlerow_subselect(st_select_lex *select_lex)
{
DBUG_ENTER("Item_singlerow_subselect::Item_singlerow_subselect");
init(select_lex, new select_singlerow_subselect(this));
max_columns= 1;
maybe_null= 1;
max_columns= UINT_MAX;
DBUG_VOID_RETURN;