* Slightly modified from abstract to include the table name to prevent ambiguous errors.
	 *
	 * @since 3.9.2
	 * @since 7.1.0 Drop usage of `$this->get_filter('where')` in favor of `llms_notifications_query_where`.
	 *
	 * @return string
	 */
	protected function sql_orderby() {

		$sql = 'ORDER BY';

		$comma = false;

		foreach ( $this->get( 'sort' ) as $orderby => $order ) {
			$pre   = ( $comma ) ? ', ' : ' ';
			$sql  .= $pre . "n.{$orderby} {$order}";
			$comma = true;
		}

		if ( $this->get( 'suppress_filters' ) ) {
			return $sql;
		}

		/**
		 * Filters the query WHERE clause.
		 *
		 * @since 7.1.0
		 *
		 * @param string                   $sql                 The WHERE clause of the query.
		 * @param LLMS_Notifications_Query $notifications_query Instance of LLMS_Events_Query.
		 */
		return apply_filters( 'llms_notifications_query_where', $sql, $this );

	}

	/**
	 * Retrieve the prepared SQL for the WHERE clause
	 *
	 * @return   string
	 * @since    3.8.0
	 * @version  3.14.0
	 */
	private function sql_where() {