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| author | Sergey Glukhov <Sergey.Glukhov@sun.com> | 2010-07-09 14:39:47 +0400 |
|---|---|---|
| committer | Sergey Glukhov <Sergey.Glukhov@sun.com> | 2010-07-09 14:39:47 +0400 |
| commit | 013136364c95b7bcc5a987dd301b042f31dab1f9 (patch) | |
| tree | 2856c3cdebae0d619e3583ec3b8e82991deed42d /mysql-test/r/having.result | |
| parent | 625ae7185abcfc7042be225d4f8ef77806fc0803 (diff) | |
| download | mariadb-git-013136364c95b7bcc5a987dd301b042f31dab1f9.tar.gz | |
Bug#54416 MAX from JOIN with HAVING returning NULL with 5.1 and Empty set
The problem there is that HAVING condition evaluates const
parts of condition despite the condition has references
on aggregate functions. Table t1 became const tables
after make_join_statistics and table1.pk = 1, HAVING is
transformed into MAX(1) < 7 and taken away from HAVING.
The fix is to skip evaluation of HAVING conts parts if
HAVING condition has references on aggregate functions.
mysql-test/r/having.result:
test case
mysql-test/t/having.test:
test case
sql/sql_select.cc:
skip evaluation of HAVING conts parts if
HAVING condition has references on aggregate functions.
Diffstat (limited to 'mysql-test/r/having.result')
| -rw-r--r-- | mysql-test/r/having.result | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mysql-test/r/having.result b/mysql-test/r/having.result index 54293e9d02e..cd1b4ae0218 100644 --- a/mysql-test/r/having.result +++ b/mysql-test/r/having.result @@ -530,3 +530,19 @@ MAX(t2.f2) NULL DROP TABLE t1,t2; End of 5.0 tests +# +# Bug#54416 MAX from JOIN with HAVING returning NULL with 5.1 and Empty set +# +CREATE TABLE t1 (f1 INT(11), f2 VARCHAR(1), PRIMARY KEY (f1)); +INSERT INTO t1 VALUES (1,'f'); +CREATE TABLE t2 (f1 INT(11), f2 VARCHAR(1)); +INSERT INTO t2 VALUES (2,'m'); +INSERT INTO t2 VALUES (3,'m'); +INSERT INTO t2 VALUES (11,NULL); +INSERT INTO t2 VALUES (12,'k'); +SELECT MAX(t1.f1) field1 +FROM t1 JOIN t2 ON t2.f2 LIKE 'x' +HAVING field1 < 7; +field1 +DROP TABLE t1,t2; +End of 5.1 tests |