pathauto: Url Alias via bulk update nicht mehr möglich (The SELECT would examine more than MAX_JOIN_SIZE rows;)

user warning: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET SQL_MAX_JOIN_SIZE=# if the SELECT is okay query: SELECT n.nid FROM node n LEFT JOIN url_alias ua ON CONCAT('node/', n.nid) = ua.src WHERE ua.src IS NULL AND n.type IN ('story','blog','faq','magazin','pressemitteilung','page','webform','breakingnews') LIMIT 0, 50 in /is/htdocs/xxxxxx_xxxxxx/www/prnewsnet/sites/all/modules/pathauto/pathauto_node.inc on line 101.