Ouzo\Db\Dialect\Dialect::_using PHP 메소드

    protected function _using($usingClauses, $glue = ', ', $table = null, $alias = null)
    {
        $using = DialectUtil::buildUsingQuery($usingClauses, $glue, $table, $alias);
        if ($using) {
            return ' USING ' . $using;
        }
        return '';
    }