Perfect

SELECT * FROM gallery2 WHERE topic_id="590" UNION SELECT * FROM gallery2 WHERE topic_id="1399806" UNION SELECT * FROM gallery2 WHERE topic_id="1061576" UNION SELECT * FROM gallery2 WHERE topic_id="1705841" UNION SELECT * FROM gallery2 WHERE topic_id="1112285" UNION SELECT * FROM gallery2 WHERE topic_id="289976" UNION SELECT * FROM gallery2 WHERE topic_id="1032086" UNION SELECT * FROM gallery2 WHERE topic_id="1817065" UNION SELECT * FROM gallery2 WHERE topic_id="1186949" UNION SELECT * FROM gallery2 WHERE topic_id="753631" UNION SELECT * FROM gallery2 WHERE topic_id="626584" UNION SELECT * FROM gallery2 WHERE topic_id="698007" UNION SELECT * FROM gallery2 WHERE topic_id="1789811" UNION SELECT * FROM gallery2 WHERE topic_id="931231" UNION SELECT * FROM gallery2 WHERE topic_id="1004738" UNION SELECT * FROM gallery2 WHERE topic_id="1003241"