[CP] reorder the order of complex filters

src/sql/optimizer/ob_log_group_by.cpp

@@ -895,4 +895,11 @@ int ObLogGroupBy::compute_sharding_info()
     LOG_WARN("failed to compute sharding info", K(ret));
   }
   return ret;
+}
+
+int ObLogGroupBy::get_card_without_filter(double &card)
+{
+  int ret = OB_SUCCESS;
+  card = get_distinct_card();
+  return ret;
 }