if ($columnparts[5] ?: $columnparts[6]) {
                $this->database = $this->escape($columnparts[1] ?: $columnparts[2]);
                $this->schema = $this->escape($columnparts[3] ?: $columnparts[4]);
                $this->table = $this->escape($columnparts[5] ?: $columnparts[6]);
            } elseif ($columnparts[3] ?: $columnparts[4]) {