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Bug #31884: Assertion + crash in subquery in the SELECT clause.

Browse Source 
Item_in_subselect's only externally callable method is val_bool().
However the nullability in the wrapper class (Item_in_optimizer) is 
established by calling the "forbidden" method val_int().

Fixed to use the correct method (val_bool() ) to establish nullability 
of Item_in_subselect in Item_in_optimizer.
This commit is contained in:
gkodinov/kgeorge@magare.gmz 2007-10-30 14:27:21 +02:00
parent 76bf63ba4b
commit 01fe24cd68
3 changed files with 27 additions and 0 deletions
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11
mysql-test/r/subselect.result
View File

@ -4139,4 +4139,15 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1;
(SELECT SUM(t1.a) FROM t2 WHERE a=1)
3
DROP TABLE t1,t2;
CREATE TABLE t1 (a1 INT, a2 INT);
CREATE TABLE t2 (b1 INT, b2 INT);
INSERT INTO t1 VALUES (100, 200);
INSERT INTO t1 VALUES (101, 201);
INSERT INTO t2 VALUES (101, 201);
INSERT INTO t2 VALUES (103, 203);
SELECT ((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL FROM t1;
((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL
0
0
DROP TABLE t1, t2;
End of 5.0 tests.

15
mysql-test/t/subselect.test
View File

@ -2987,4 +2987,19 @@ SELECT (SELECT SUM(t1.a) FROM t2 WHERE a!=0) FROM t1;
SELECT (SELECT SUM(t1.a) FROM t2 WHERE a=1) FROM t1;
DROP TABLE t1,t2;
#
# Bug #31884: Assertion + crash in subquery in the SELECT clause.
#
CREATE TABLE t1 (a1 INT, a2 INT);
CREATE TABLE t2 (b1 INT, b2 INT);
INSERT INTO t1 VALUES (100, 200);
INSERT INTO t1 VALUES (101, 201);
INSERT INTO t2 VALUES (101, 201);
INSERT INTO t2 VALUES (103, 203);
SELECT ((a1,a2) IN (SELECT * FROM t2 WHERE b2 > 0)) IS NULL FROM t1;
DROP TABLE t1, t2;
--echo End of 5.0 tests.

1
sql/item_subselect.h
View File

@ -306,6 +306,7 @@ public:
double val_real();
String *val_str(String*);
my_decimal *val_decimal(my_decimal *);
void update_null_value () { (void) val_bool(); }
bool val_bool();
void top_level_item() { abort_on_null=1; }
inline bool is_top_level_item() { return abort_on_null; }