1 files changed, 50 insertions, 2 deletions
diff --git a/mysql-test/t/myisam_icp.test b/mysql-test/t/myisam_icp.test
index 66ffbfa3821..bbff6c30e56 100644
--- a/mysql-test/t/myisam_icp.test
+++ b/mysql-test/t/myisam_icp.test
@@ -2,11 +2,11 @@
 # ICP/MyISAM tests (Index Condition Pushdown)
 #
 
---source include/icp_tests.inc
-
 set @myisam_icp_tmp=@@optimizer_switch;
 set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
 
+--source include/icp_tests.inc
+
 --disable_warnings
 drop table if exists t0, t1, t1i, t1m;
 --enable_warnings
@@ -209,4 +209,52 @@ INSERT INTO t1 VALUES
 SELECT b FROM t1 WHERE a != 1 AND c IS NULL ORDER BY 1;
 DROP TABLE t1;
 
+--echo #
+--echo # Bug#870046: ICP for a GROUP BY query
+--echo #
+
+CREATE TABLE t1 (a int, b varchar(1), c varchar(1), INDEX idx(b));
+INSERT INTO t1 VALUES (2,'x','x'), (5,'x','y');
+
+SET SESSION optimizer_switch='index_condition_pushdown=off';
+EXPLAIN
+SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;
+SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;
+SET SESSION optimizer_switch='index_condition_pushdown=on';
+EXPLAIN
+SELECT a, MIN(c) FROM t1 WHERE b = 'x' AND c > 'x' GROUP BY a;
+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;