public static function listPagesByPrefix( $prefix ) {
		$dbr = wfGetDB( DB_SLAVE );

		$title = Title::newFromText( $prefix );
		if ( $title ) {
			$ns = $title->getNamespace();
			$prefix = $title->getDBkey();
		} else {
			// Prolly won't work too good
			// @todo handle bare namespace names cleanly?
			$ns = 0;
		}

		$conds = [
			'ar_namespace' => $ns,
			'ar_title' . $dbr->buildLike( $prefix , $dbr->anyString() ),
		];

		**$sql = " SELECT ar_namespace ,  ar_title , COUNT(*) as count FROM  archive WHERE MATCH(ar_title) AGAINST('$prefix' IN BOOLEAN MODE) AND ar_namespace = $ns GROUP BY ar_namespace , ar_title ORDER BY ar_namespace , ar_title LIMIT 100";

		**return $dbr->query( $sql, __METHOD__ );
	}