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-rw-r--r--mysql-test/r/subselect4.result22
1 files changed, 22 insertions, 0 deletions
diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result
index 66d3fa6214a..a909230121d 100644
--- a/mysql-test/r/subselect4.result
+++ b/mysql-test/r/subselect4.result
@@ -2331,6 +2331,28 @@ id a2 a3 id a2 a3
DROP VIEW v2;
DROP TABLE t1,t2;
#
+# MDEV-5686: degenerate disjunct in NOT IN subquery
+#
+CREATE TABLE t1 (a int, b int, c varchar(3)) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1,1,'CAN'),(2,2,'AUS');
+CREATE TABLE t2 (f int) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (3);
+EXPLAIN EXTENDED
+SELECT * FROM t2
+WHERE f NOT IN (SELECT b FROM t1
+WHERE 0 OR (c IN ('USA') OR c NOT IN ('USA')) AND a = b);
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 PRIMARY t2 system NULL NULL NULL NULL 1 100.00
+2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where
+Warnings:
+Note 1003 select 3 AS `f` from dual where (not(<expr_cache><3>(<in_optimizer>(3,<exists>(select `test`.`t1`.`b` from `test`.`t1` where (((`test`.`t1`.`c` = 'USA') or (`test`.`t1`.`c` <> 'USA')) and trigcond(((<cache>(3) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`))) and (`test`.`t1`.`b` = `test`.`t1`.`a`)) having trigcond(<is_not_null_test>(`test`.`t1`.`b`)))))))
+SELECT * FROM t2
+WHERE f NOT IN (SELECT b FROM t1
+WHERE 0 OR (c IN ('USA') OR c NOT IN ('USA')) AND a = b);
+f
+3
+DROP TABLE t1,t2;
+#
# MDEV-3899 Valgrind warnings (blocks are definitely lost) in filesort on IN subquery with SUM and DISTINCT
#
CREATE TABLE t1 (a INT) ENGINE=MyISAM;