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| author | Monty <monty@mariadb.org> | 2022-06-15 23:49:09 +0300 |
|---|---|---|
| committer | Monty <monty@mariadb.org> | 2022-06-16 00:12:11 +0300 |
| commit | 674842bee0a564a2d94e99c4e1319a716aa10aa9 (patch) | |
| tree | dc1371820ac7210ef63cfe43a56723bf3d7e6641 /mysql-test/main/range.test | |
| parent | 27309fc6b0833d7a74baab4afaeef1dcb14307c8 (diff) | |
| download | mariadb-git-674842bee0a564a2d94e99c4e1319a716aa10aa9.tar.gz | |
MDEV-28858 Wrong result with table elimination combined with not_null_range_scan
The bug was that build_notnull_conds_for_range_scans() did not take into
account the join_tab is not yet sorted with constant tables first.
Fixed the bug by testing explicitely if a table is a const table.
Diffstat (limited to 'mysql-test/main/range.test')
| -rw-r--r-- | mysql-test/main/range.test | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mysql-test/main/range.test b/mysql-test/main/range.test index 6a2e318e732..a785726cb22 100644 --- a/mysql-test/main/range.test +++ b/mysql-test/main/range.test @@ -2492,6 +2492,24 @@ DROP TABLE t1, t2; SET @@optimizer_switch= @save_optimizer_switch; +--echo +--echo # MDEV-28858 Wrong result with table elimination combined with +--echo # not_null_range_scan +--echo # + +CREATE TABLE t1 (a INT, b INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (10,1),(null,2); +CREATE TABLE t2 (pk INT PRIMARY KEY) ENGINE=MyISAM; +INSERT INTO t2 VALUES (1),(2); + +SET @save_optimizer_switch= @@optimizer_switch; +SET optimizer_switch= 'not_null_range_scan=on'; +SELECT t1.b FROM t1 LEFT JOIN t2 ON t1.a = t2.pk WHERE t1.a IS NULL ORDER BY t1.b; +SET optimizer_switch= 'not_null_range_scan=off'; +SELECT t1.b FROM t1 LEFT JOIN t2 ON t1.a = t2.pk WHERE t1.a IS NULL ORDER BY t1.b; +SET @@optimizer_switch=@save_optimizer_switch; +drop table t1,t2; + --echo # --echo # End of 10.5 tests --echo # |