Perfect

SELECT * FROM gallery2 WHERE topic_id="539127" UNION SELECT * FROM gallery2 WHERE topic_id="999719" UNION SELECT * FROM gallery2 WHERE topic_id="900030" UNION SELECT * FROM gallery2 WHERE topic_id="1101217" UNION SELECT * FROM gallery2 WHERE topic_id="267649" UNION SELECT * FROM gallery2 WHERE topic_id="1443797" UNION SELECT * FROM gallery2 WHERE topic_id="1207104" UNION SELECT * FROM gallery2 WHERE topic_id="406925" UNION SELECT * FROM gallery2 WHERE topic_id="305075" UNION SELECT * FROM gallery2 WHERE topic_id="1537875" UNION SELECT * FROM gallery2 WHERE topic_id="731220" UNION SELECT * FROM gallery2 WHERE topic_id="1249625" UNION SELECT * FROM gallery2 WHERE topic_id="1351884" UNION SELECT * FROM gallery2 WHERE topic_id="150579" UNION SELECT * FROM gallery2 WHERE topic_id="1071248" UNION SELECT * FROM gallery2 WHERE topic_id="684266"