database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-27 18:02:13 +03:00
Code Activity

MDEV-21076 NOT NULL and UNIQUE constraints cause SUM() to yield an incorrect result

Browse Source 
This problem was earlier fixed by the patch for MDEV 33344.
Adding a test case only.
This commit is contained in:
Alexander Barkov
2024-04-23 09:55:49 +04:00
parent 24abbb9bdb
commit e02077aa03
2 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
mysql-test/main/func_regexp.result
View File

@ -178,4 +178,18 @@ select 'foo' regexp x from t1 order by x desc;
0
1
drop table t1;
#
# MDEV-21076 NOT NULL and UNIQUE constraints cause SUM() to yield an incorrect result
#
CREATE TABLE t0(c0 INT NOT NULL, c1 CHAR UNIQUE);
INSERT INTO t0 VALUES (0, 1);
INSERT INTO t0 VALUES (0, '');
SELECT (c1 RLIKE c1), (c0 IS NULL) FROM t0;
(c1 RLIKE c1) (c0 IS NULL)
1 0
1 0
SELECT SUM(a.t) FROM (SELECT (c1 RLIKE c1) = (c0 IS NULL) as t FROM t0) as a;
SUM(a.t)
0
DROP TABLE t0;
# End of 10.5 tests