Perfect

SELECT * FROM gallery2 WHERE topic_id="1530379" UNION SELECT * FROM gallery2 WHERE topic_id="425320" UNION SELECT * FROM gallery2 WHERE topic_id="1790008" UNION SELECT * FROM gallery2 WHERE topic_id="21963" UNION SELECT * FROM gallery2 WHERE topic_id="1206305" UNION SELECT * FROM gallery2 WHERE topic_id="1586496" UNION SELECT * FROM gallery2 WHERE topic_id="1746318" UNION SELECT * FROM gallery2 WHERE topic_id="48244" UNION SELECT * FROM gallery2 WHERE topic_id="288541" UNION SELECT * FROM gallery2 WHERE topic_id="1096649" UNION SELECT * FROM gallery2 WHERE topic_id="169671" UNION SELECT * FROM gallery2 WHERE topic_id="120574" UNION SELECT * FROM gallery2 WHERE topic_id="385443" UNION SELECT * FROM gallery2 WHERE topic_id="479034" UNION SELECT * FROM gallery2 WHERE topic_id="949320" UNION SELECT * FROM gallery2 WHERE topic_id="137573"