SELECT * FROM `db_193470_2`.`movies` WHERE VIDEOFORMAT='SD (XVID)' AND (ORIGINALTITLE LIKE '%Xu Qing%' OR TRANSLATEDTITLE LIKE '%Xu Qing%' OR ACTORS LIKE '%Xu Qing%' OR DIRECTOR LIKE '%Xu Qing%' OR PRODUCER LIKE '%Xu Qing%') ORDER BY SOURCE DESC, NUM DESC LIMIT -50,50

Invalid Query: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-50,50' at line 1