BUG#887026: Wrong result with ICP, outer join, subquery in maria-5.3-icp

- Do not push index condition if we're using a triggered ref access.

1 files changed, 30 insertions, 0 deletions

diff --git a/mysql-test/t/myisam_icp.test b/mysql-test/t/myisam_icp.test
index 7e7affb1b8f..bbff6c30e56 100644
--- a/mysql-test/t/myisam_icp.test
+++ b/mysql-test/t/myisam_icp.test
@@ -227,4 +227,34 @@ SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;
 
 DROP TABLE t1;
 
+--echo #
+--echo # BUG#887026: Wrong result with ICP, outer join, subquery in maria-5.3-icp
+--echo #
+
+CREATE TABLE t1 (c varchar(1));
+INSERT INTO t1 VALUES ('c'), ('c');
+
+CREATE TABLE t2 (c varchar(1), b int);
+INSERT INTO t2 VALUES ('d', NULL),('d', NULL);
+
+CREATE TABLE t3 (c varchar(1));
+INSERT INTO t3 VALUES ('c');
+INSERT INTO t3 VALUES ('c');
+
+CREATE TABLE t4 ( b int, c varchar(1), KEY (b));
+INSERT INTO t4 VALUES (7,'c');
+INSERT INTO t4 VALUES (7,'c');
+
+--echo # Must be t1,t2,t3,t4, with t4 having Full-scan-on-NULL but not Using index condition
+explain 
+SELECT * FROM t1 LEFT JOIN t2 ON t1.c=t2.b
+WHERE 
+  t2.b NOT IN (SELECT t4.b FROM t3 STRAIGHT_JOIN t4 WHERE t4.b <= 2 AND t4.c = t3.c);
+ 
+SELECT * FROM t1 LEFT JOIN t2 ON t1.c=t2.b
+WHERE 
+  t2.b NOT IN (SELECT t4.b FROM t3 STRAIGHT_JOIN t4 WHERE t4.b <= 2 AND t4.c = t3.c);
+
+DROP TABLE t1,t2,t3,t4;
+
 set optimizer_switch=@myisam_icp_tmp;