a fix (bug #2885: like datetime)

mysql-test/r/func_like.result

@@ -46,6 +46,12 @@ select * from t1 where a like 'a\\%' escape '#' and a like 'a\\\\b';
 a
 a\b
 drop table t1;
+create table t1 (a datetime);
+insert into t1 values ('2004-03-11 12:00:21');
+select * from t1 where a like '2004-03-11 12:00:21';
+a
+2004-03-11 12:00:21
+drop table t1;
 SET NAMES koi8r;
 CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET koi8r);
 INSERT INTO t1 VALUES (''),(''),(''),(''),(''),('');

mysql-test/t/func_like.test

@@ -35,6 +35,14 @@ select * from t1 where a like 'a\\%' escape '#';
 select * from t1 where a like 'a\\%' escape '#' and a like 'a\\\\b';
 drop table t1;
 
+#
+# Bug #2885: like and datetime
+#
+
+create table t1 (a datetime);
+insert into t1 values ('2004-03-11 12:00:21');
+select * from t1 where a like '2004-03-11 12:00:21';
+drop table t1;
 
 #
 # Test like with non-default character set

sql/item_cmpfunc.cc

@@ -225,6 +225,13 @@ void Item_bool_func2::fix_length_and_dec()
   }
   
   // Make a special case of compare with fields to get nicer DATE comparisons
+
+  if (functype() == LIKE_FUNC)  // Disable conversion in case of LIKE function.
+  {
+    set_cmp_func();
+    return;
+  }
+    
   if (args[0]->type() == FIELD_ITEM)
   {
     Field *field=((Item_field*) args[0])->field;