Chained

SELECT * FROM gallery2 WHERE topic_id="739956" UNION SELECT * FROM gallery2 WHERE topic_id="384365" UNION SELECT * FROM gallery2 WHERE topic_id="1276728" UNION SELECT * FROM gallery2 WHERE topic_id="1709973" UNION SELECT * FROM gallery2 WHERE topic_id="280350" UNION SELECT * FROM gallery2 WHERE topic_id="1084710" UNION SELECT * FROM gallery2 WHERE topic_id="1516356" UNION SELECT * FROM gallery2 WHERE topic_id="1639402" UNION SELECT * FROM gallery2 WHERE topic_id="1630258" UNION SELECT * FROM gallery2 WHERE topic_id="539558" UNION SELECT * FROM gallery2 WHERE topic_id="276382" UNION SELECT * FROM gallery2 WHERE topic_id="399162" UNION SELECT * FROM gallery2 WHERE topic_id="69634" UNION SELECT * FROM gallery2 WHERE topic_id="633436" UNION SELECT * FROM gallery2 WHERE topic_id="1196212" UNION SELECT * FROM gallery2 WHERE topic_id="516416"