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

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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
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12
mysql-test/main/func_regexp.test
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@ -121,4 +121,16 @@ select 'foo' regexp x from t1 order by x asc;
select 'foo' regexp x from t1 order by x desc;
drop table t1;
--echo #
--echo # MDEV-21076 NOT NULL and UNIQUE constraints cause SUM() to yield an incorrect result
--echo #
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;
SELECT SUM(a.t) FROM (SELECT (c1 RLIKE c1) = (c0 IS NULL) as t FROM t0) as a;
DROP TABLE t0;
--echo # End of 10.5 tests