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Fix for bug#8656: Crash with group_concat on alias in outer table

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fixed result_field support of Item_ref
This commit is contained in:
unknown
2005-03-16 16:44:28 +03:00
parent 9245168429
commit a5c87958a6
3 changed files with 16 additions and 0 deletions
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7
mysql-test/r/func_gconcat.result
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@ -462,3 +462,10 @@ SELECT GROUP_CONCAT(id) AS gc FROM t1 HAVING gc IS NULL;
gc
NULL
DROP TABLE t1;
create table r2 (a int, b int);
insert into r2 values (1,1), (2,2);
select b x, (select group_concat(x) from r2) from r2;
x (select group_concat(x) from r2)
1 1,1
2 2,2
drop table r2;

8
mysql-test/t/func_gconcat.test
View File

@ -284,3 +284,11 @@ drop table t1;
CREATE TABLE t1 (id int);
SELECT GROUP_CONCAT(id) AS gc FROM t1 HAVING gc IS NULL;
DROP TABLE t1;
#
# Bug #8656: Crash with group_concat on alias in outer table
#
create table r2 (a int, b int);
insert into r2 values (1,1), (2,2);
select b x, (select group_concat(x) from r2) from r2;
drop table r2;

1
sql/item.h
View File

@ -902,6 +902,7 @@ public:
void save_org_in_field(Field *field) { (*ref)->save_org_in_field(field); }
enum Item_result result_type () const { return (*ref)->result_type(); }
enum_field_types field_type() const { return (*ref)->field_type(); }
Field *get_tmp_table_field() { return result_field; }
table_map used_tables() const
{
return depended_from ? OUTER_REF_TABLE_BIT : (*ref)->used_tables();