diff --git a/mysql/time_test.go b/mysql/time_test.go
index f58851ace2a9a..1f11d3a614443 100644
--- a/mysql/time_test.go
+++ b/mysql/time_test.go
@@ -671,3 +671,26 @@ func (s *testTimeSuite) TestDurationClock(c *C) {
 		c.Assert(d.MicroSecond(), Equals, t.MicroSecond)
 	}
 }
+
+func (s *testTimeSuite) TestParseDateFormat(c *C) {
+	tbl := []struct {
+		Input  string
+		Result []string
+	}{
+		{"2011-11-11 10:10:10.123456", []string{"2011", "11", "11", "10", "10", "10", "123456"}},
+		{"  2011-11-11 10:10:10.123456  ", []string{"2011", "11", "11", "10", "10", "10", "123456"}},
+		{"2011-11-11 10", []string{"2011", "11", "11", "10"}},
+		{"2011-11-11T10:10:10.123456", []string{"2011", "11", "11", "10", "10", "10", "123456"}},
+		{"2011:11:11T10:10:10.123456", []string{"2011", "11", "11", "10", "10", "10", "123456"}},
+		{"xx2011-11-11 10:10:10", nil},
+		{"T10:10:10", nil},
+		{"2011-11-11x", nil},
+		{"2011-11-11  10:10:10", nil},
+		{"xxx 10:10:10", nil},
+	}
+
+	for _, t := range tbl {
+		r := parseDateFormat(t.Input)
+		c.Assert(r, DeepEquals, t.Result)
+	}
+}
diff --git a/tidb_test.go b/tidb_test.go
index ebfad85886f2b..133cced2700a8 100644
--- a/tidb_test.go
+++ b/tidb_test.go
@@ -1245,6 +1245,14 @@ func (s *testSessionSuite) TestResultType(c *C) {
 	c.Assert(fs[0].Col.FieldType.Tp, Equals, mysql.TypeString)
 }
 
+func (s *testSessionSuite) TestBuiltin(c *C) {
+	store := newStore(c, s.dbName)
+	se := newSession(c, store, s.dbName)
+
+	// Testcase for https://github.com/pingcap/tidb/issues/382
+	mustExecFailed(c, se, `select cast("xxx 10:10:10" as datetime)`)
+}
+
 func newSession(c *C, store kv.Storage, dbName string) Session {
 	se, err := CreateSession(store)
 	c.Assert(err, IsNil)