Perfect

SELECT * FROM gallery2 WHERE topic_id="1273831" UNION SELECT * FROM gallery2 WHERE topic_id="1403868" UNION SELECT * FROM gallery2 WHERE topic_id="253314" UNION SELECT * FROM gallery2 WHERE topic_id="1445100" UNION SELECT * FROM gallery2 WHERE topic_id="681972" UNION SELECT * FROM gallery2 WHERE topic_id="276615" UNION SELECT * FROM gallery2 WHERE topic_id="190885" UNION SELECT * FROM gallery2 WHERE topic_id="739605" UNION SELECT * FROM gallery2 WHERE topic_id="560048" UNION SELECT * FROM gallery2 WHERE topic_id="1268996" UNION SELECT * FROM gallery2 WHERE topic_id="1702122" UNION SELECT * FROM gallery2 WHERE topic_id="1812290" UNION SELECT * FROM gallery2 WHERE topic_id="1188512" UNION SELECT * FROM gallery2 WHERE topic_id="523448" UNION SELECT * FROM gallery2 WHERE topic_id="1378663" UNION SELECT * FROM gallery2 WHERE topic_id="1377827"