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subselect.test, subselect.result:

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Added a test case for bug #12392.
item_cmpfunc.cc:
  Fixed bug #12392.
  Missing handling of rows containing NULL components
  when evaluating IN predicates caused a crash.
This commit is contained in:
igor@rurik.mysql.com 2005-08-08 16:51:12 -07:00
parent 0ff109f170
commit 73be194f96
3 changed files with 19 additions and 0 deletions
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6
mysql-test/r/subselect.result
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@ -2742,3 +2742,9 @@ one two flag
5 6 N 5 6 N
7 8 N 7 8 N
DROP TABLE t1,t2; DROP TABLE t1,t2;
CREATE TABLE t1 (a char(5), b char(5));
INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa');
SELECT * FROM t1 WHERE (a,b) IN (('aaa','aaa'), ('aaa','bbb'));
a b
aaa aaa
DROP TABLE t1;

11
mysql-test/t/subselect.test
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@ -1770,4 +1770,15 @@ SELECT * FROM t1
DROP TABLE t1,t2; DROP TABLE t1,t2;
#
# Bug #12392: where cond with IN predicate for rows and NULL values in table
#
CREATE TABLE t1 (a char(5), b char(5));
INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa');
SELECT * FROM t1 WHERE (a,b) IN (('aaa','aaa'), ('aaa','bbb'));
DROP TABLE t1;
# End of 4.1 tests # End of 4.1 tests

2
sql/item_cmpfunc.cc
View File

@ -1551,6 +1551,8 @@ in_row::~in_row()
byte *in_row::get_value(Item *item) byte *in_row::get_value(Item *item)
{ {
tmp.store_value(item); tmp.store_value(item);
if (item->is_null())
return 0;
return (byte *)&tmp; return (byte *)&tmp;
} }