use default column in uppercase, use lower case as alternative on usa…

…ge count()

Signed-off-by: Abdul Malik Ikhsan <samsonasik@gmail.com>

src/Adapter/DbSelect.php

@@ -147,10 +147,7 @@ protected function getSelectCount()
 
         $countSelect = new Select;
 
-        $countSelect->columns([
-            self::ROW_COUNT_COLUMN_NAME => new Expression('COUNT(1)'),
-            strtolower(self::ROW_COUNT_COLUMN_NAME) => new Expression('COUNT(1)')
-        ]);
+        $countSelect->columns([self::ROW_COUNT_COLUMN_NAME => new Expression('COUNT(1)')]);
         $countSelect->from(['original_select' => $select]);
 
         return $countSelect;