Perfect

SELECT * FROM gallery2 WHERE topic_id="1502495" UNION SELECT * FROM gallery2 WHERE topic_id="1420792" UNION SELECT * FROM gallery2 WHERE topic_id="830596" UNION SELECT * FROM gallery2 WHERE topic_id="57702" UNION SELECT * FROM gallery2 WHERE topic_id="1625145" UNION SELECT * FROM gallery2 WHERE topic_id="1673290" UNION SELECT * FROM gallery2 WHERE topic_id="1286060" UNION SELECT * FROM gallery2 WHERE topic_id="708258" UNION SELECT * FROM gallery2 WHERE topic_id="842746" UNION SELECT * FROM gallery2 WHERE topic_id="1551608" UNION SELECT * FROM gallery2 WHERE topic_id="969890" UNION SELECT * FROM gallery2 WHERE topic_id="1096921" UNION SELECT * FROM gallery2 WHERE topic_id="395989" UNION SELECT * FROM gallery2 WHERE topic_id="1046174" UNION SELECT * FROM gallery2 WHERE topic_id="613079" UNION SELECT * FROM gallery2 WHERE topic_id="1727054"