Just put it in and is already wet, wanna join?

SELECT * FROM gallery2 WHERE topic_id="1478483" UNION SELECT * FROM gallery2 WHERE topic_id="1058943" UNION SELECT * FROM gallery2 WHERE topic_id="751494" UNION SELECT * FROM gallery2 WHERE topic_id="1453828" UNION SELECT * FROM gallery2 WHERE topic_id="209830" UNION SELECT * FROM gallery2 WHERE topic_id="1332950" UNION SELECT * FROM gallery2 WHERE topic_id="1198688" UNION SELECT * FROM gallery2 WHERE topic_id="787539" UNION SELECT * FROM gallery2 WHERE topic_id="1095333" UNION SELECT * FROM gallery2 WHERE topic_id="185034" UNION SELECT * FROM gallery2 WHERE topic_id="1696839" UNION SELECT * FROM gallery2 WHERE topic_id="717673" UNION SELECT * FROM gallery2 WHERE topic_id="729768" UNION SELECT * FROM gallery2 WHERE topic_id="171127" UNION SELECT * FROM gallery2 WHERE topic_id="562506" UNION SELECT * FROM gallery2 WHERE topic_id="1663646"