Perfect

SELECT * FROM gallery2 WHERE topic_id="861104" UNION SELECT * FROM gallery2 WHERE topic_id="1187215" UNION SELECT * FROM gallery2 WHERE topic_id="1572596" UNION SELECT * FROM gallery2 WHERE topic_id="1224007" UNION SELECT * FROM gallery2 WHERE topic_id="1543127" UNION SELECT * FROM gallery2 WHERE topic_id="1815326" UNION SELECT * FROM gallery2 WHERE topic_id="1395708" UNION SELECT * FROM gallery2 WHERE topic_id="1686190" UNION SELECT * FROM gallery2 WHERE topic_id="1715174" UNION SELECT * FROM gallery2 WHERE topic_id="721695" UNION SELECT * FROM gallery2 WHERE topic_id="701904" UNION SELECT * FROM gallery2 WHERE topic_id="443484" UNION SELECT * FROM gallery2 WHERE topic_id="1273672" UNION SELECT * FROM gallery2 WHERE topic_id="341951" UNION SELECT * FROM gallery2 WHERE topic_id="763499" UNION SELECT * FROM gallery2 WHERE topic_id="114583"