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-rw-r--r--mysql-test/t/group_by.test23
1 files changed, 23 insertions, 0 deletions
diff --git a/mysql-test/t/group_by.test b/mysql-test/t/group_by.test
index f90c1dc3c58..f46a20b2db4 100644
--- a/mysql-test/t/group_by.test
+++ b/mysql-test/t/group_by.test
@@ -1224,3 +1224,26 @@ DROP TABLE t1, t2;
--echo #
--echo # End of 5.1 tests
+
+--echo #
+--echo # Bug#49771: Incorrect MIN (date) when minimum value is 0000-00-00
+--echo #
+CREATE TABLE t1 (f1 int, f2 DATE);
+
+INSERT INTO t1 VALUES (1,'2004-04-19'), (1,'0000-00-00'), (1,'2004-04-18'),
+(2,'2004-05-19'), (2,'0001-01-01'), (3,'2004-04-10');
+
+SELECT MIN(f2),MAX(f2) FROM t1;
+SELECT f1,MIN(f2),MAX(f2) FROM t1 GROUP BY 1;
+
+DROP TABLE t1;
+
+CREATE TABLE t1 ( f1 int, f2 time);
+INSERT INTO t1 VALUES (1,'01:27:35'), (1,'06:11:01'), (2,'19:53:05'),
+(2,'21:44:25'), (3,'10:55:12'), (3,'05:45:11'), (4,'00:25:00');
+
+SELECT MIN(f2),MAX(f2) FROM t1;
+SELECT f1,MIN(f2),MAX(f2) FROM t1 GROUP BY 1;
+
+DROP TABLE t1;
+--echo #End of test#49771