BUG#623300: Query with join_cache_level = 6 returns extra rows in maria-5.3-dsmrr-cpk

- Testcase (the bug itself was fixed by development on BKA side)

mysql-test/r/innodb_mrr.result

@@ -433,3 +433,97 @@ col_varchar_key
 DROP TABLE t1;
 set join_cache_level=@save_join_cache_level;
 set optimizer_switch=@save_optimizer_switch;
+# 
+# BUG#623300: Query with join_cache_level = 6 returns extra rows in maria-5.3-dsmrr-cpk
+# 
+CREATE TABLE t1 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+col_int_nokey int(11) DEFAULT NULL,
+PRIMARY KEY (pk)
+) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (10,7);
+INSERT INTO t1 VALUES (11,1);
+INSERT INTO t1 VALUES (12,5);
+INSERT INTO t1 VALUES (13,3);
+INSERT INTO t1 VALUES (14,6);
+INSERT INTO t1 VALUES (15,92);
+INSERT INTO t1 VALUES (16,7);
+INSERT INTO t1 VALUES (17,NULL);
+INSERT INTO t1 VALUES (18,3);
+INSERT INTO t1 VALUES (19,5);
+INSERT INTO t1 VALUES (20,1);
+INSERT INTO t1 VALUES (21,2);
+INSERT INTO t1 VALUES (22,NULL);
+INSERT INTO t1 VALUES (23,1);
+INSERT INTO t1 VALUES (24,0);
+INSERT INTO t1 VALUES (25,210);
+INSERT INTO t1 VALUES (26,8);
+INSERT INTO t1 VALUES (27,7);
+INSERT INTO t1 VALUES (28,5);
+INSERT INTO t1 VALUES (29,NULL);
+CREATE TABLE t2 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+col_int_nokey int(11) DEFAULT NULL,
+PRIMARY KEY (pk)
+) ENGINE=InnoDB;
+INSERT INTO t2 VALUES (1,NULL);
+INSERT INTO t2 VALUES (2,7);
+INSERT INTO t2 VALUES (3,9);
+INSERT INTO t2 VALUES (4,7);
+INSERT INTO t2 VALUES (5,4);
+INSERT INTO t2 VALUES (6,2);
+INSERT INTO t2 VALUES (7,6);
+INSERT INTO t2 VALUES (8,8);
+INSERT INTO t2 VALUES (9,NULL);
+INSERT INTO t2 VALUES (10,5);
+INSERT INTO t2 VALUES (11,NULL);
+INSERT INTO t2 VALUES (12,6);
+INSERT INTO t2 VALUES (13,188);
+INSERT INTO t2 VALUES (14,2);
+INSERT INTO t2 VALUES (15,1);
+INSERT INTO t2 VALUES (16,1);
+INSERT INTO t2 VALUES (17,0);
+INSERT INTO t2 VALUES (18,9);
+INSERT INTO t2 VALUES (19,NULL);
+INSERT INTO t2 VALUES (20,4);
+set @my_save_join_cache_level= @@join_cache_level;
+SET join_cache_level = 0;
+SELECT table2.col_int_nokey
+FROM t1 table1 JOIN t2 table2 ON table2.pk = table1.col_int_nokey
+WHERE table1.pk ;
+col_int_nokey
+2
+4
+4
+4
+6
+6
+6
+7
+8
+9
+9
+NULL
+NULL
+NULL
+SET join_cache_level = 6;
+SELECT table2.col_int_nokey
+FROM t1 table1 JOIN t2 table2 ON table2.pk = table1.col_int_nokey
+WHERE table1.pk ;
+col_int_nokey
+2
+4
+4
+4
+6
+6
+6
+7
+8
+9
+9
+NULL
+NULL
+NULL
+set join_cache_level= @my_save_join_cache_level;
+drop table t1, t2;

mysql-test/t/innodb_mrr.test

@@ -154,3 +154,78 @@ DROP TABLE t1;
 set join_cache_level=@save_join_cache_level;
 set optimizer_switch=@save_optimizer_switch;
 
+--echo # 
+--echo # BUG#623300: Query with join_cache_level = 6 returns extra rows in maria-5.3-dsmrr-cpk
+--echo # 
+CREATE TABLE t1 (
+  pk int(11) NOT NULL AUTO_INCREMENT,
+  col_int_nokey int(11) DEFAULT NULL,
+  PRIMARY KEY (pk)
+) ENGINE=InnoDB;
+
+INSERT INTO t1 VALUES (10,7);
+INSERT INTO t1 VALUES (11,1);
+INSERT INTO t1 VALUES (12,5);
+INSERT INTO t1 VALUES (13,3);
+INSERT INTO t1 VALUES (14,6);
+INSERT INTO t1 VALUES (15,92);
+INSERT INTO t1 VALUES (16,7);
+INSERT INTO t1 VALUES (17,NULL);
+INSERT INTO t1 VALUES (18,3);
+INSERT INTO t1 VALUES (19,5);
+INSERT INTO t1 VALUES (20,1);
+INSERT INTO t1 VALUES (21,2);
+INSERT INTO t1 VALUES (22,NULL);
+INSERT INTO t1 VALUES (23,1);
+INSERT INTO t1 VALUES (24,0);
+INSERT INTO t1 VALUES (25,210);
+INSERT INTO t1 VALUES (26,8);
+INSERT INTO t1 VALUES (27,7);
+INSERT INTO t1 VALUES (28,5);
+INSERT INTO t1 VALUES (29,NULL);
+
+CREATE TABLE t2 (
+  pk int(11) NOT NULL AUTO_INCREMENT,
+  col_int_nokey int(11) DEFAULT NULL,
+  PRIMARY KEY (pk)
+) ENGINE=InnoDB;
+INSERT INTO t2 VALUES (1,NULL);
+INSERT INTO t2 VALUES (2,7);
+INSERT INTO t2 VALUES (3,9);
+INSERT INTO t2 VALUES (4,7);
+INSERT INTO t2 VALUES (5,4);
+INSERT INTO t2 VALUES (6,2);
+INSERT INTO t2 VALUES (7,6);
+INSERT INTO t2 VALUES (8,8);
+INSERT INTO t2 VALUES (9,NULL);
+INSERT INTO t2 VALUES (10,5);
+INSERT INTO t2 VALUES (11,NULL);
+INSERT INTO t2 VALUES (12,6);
+INSERT INTO t2 VALUES (13,188);
+INSERT INTO t2 VALUES (14,2);
+INSERT INTO t2 VALUES (15,1);
+INSERT INTO t2 VALUES (16,1);
+INSERT INTO t2 VALUES (17,0);
+INSERT INTO t2 VALUES (18,9);
+INSERT INTO t2 VALUES (19,NULL);
+INSERT INTO t2 VALUES (20,4);
+
+set @my_save_join_cache_level= @@join_cache_level;
+SET join_cache_level = 0;
+
+--sorted_result
+SELECT table2.col_int_nokey
+FROM t1 table1 JOIN t2 table2 ON table2.pk = table1.col_int_nokey
+WHERE table1.pk ;
+
+SET join_cache_level = 6;
+
+--sorted_result
+SELECT table2.col_int_nokey
+FROM t1 table1 JOIN t2 table2 ON table2.pk = table1.col_int_nokey
+WHERE table1.pk ;
+
+set join_cache_level= @my_save_join_cache_level;
+drop table t1, t2;
+
+