type_date.test, type_date.result:

  Added the test case for bug#21677: Wrong result when comparing a DATE and a DATETIME in BETWEEN

mysql-test/r/type_date.result

@@ -104,3 +104,9 @@ SELECT * FROM t1;
 y
 0000
 DROP TABLE t1;
+create table t1(start_date date, end_date date);
+insert into t1 values ('2000-01-01','2000-01-02');
+select 1 from t1 where cast('2000-01-01 12:01:01' as datetime) between start_date and end_date;
+1
+1
+drop table t1;

mysql-test/t/type_date.test

@@ -115,4 +115,11 @@ INSERT INTO t1 VALUES ('abc');
 SELECT * FROM t1;
 DROP TABLE t1;
 
+#
+# Bug#21677: Wrong result when comparing a DATE and a DATETIME in BETWEEN
+#
+create table t1(start_date date, end_date date);
+insert into t1 values ('2000-01-01','2000-01-02');
+select 1 from t1 where cast('2000-01-01 12:01:01' as datetime) between start_date and end_date;
+drop table t1;
 # End of 4.1 tests