private function removeColumnsFromEntity()
    {
        $del = $this->getDeletes();

        if ($del) {
            foreach ($del as $id => $meta) {
                $this->dropKeysFromColumnRemoved($id, $meta);

                $sql = new SqlCommand();
                $sql->exeCommand("ALTER TABLE " . PRE . $this->entity . " DROP COLUMN " . $meta['column']);
            }
        }
    }