Perfecto

SELECT * FROM gallery2 WHERE topic_id="1504405" UNION SELECT * FROM gallery2 WHERE topic_id="1017581" UNION SELECT * FROM gallery2 WHERE topic_id="1113654" UNION SELECT * FROM gallery2 WHERE topic_id="612110" UNION SELECT * FROM gallery2 WHERE topic_id="897932" UNION SELECT * FROM gallery2 WHERE topic_id="504828" UNION SELECT * FROM gallery2 WHERE topic_id="1204111" UNION SELECT * FROM gallery2 WHERE topic_id="529043" UNION SELECT * FROM gallery2 WHERE topic_id="1272907" UNION SELECT * FROM gallery2 WHERE topic_id="1802149" UNION SELECT * FROM gallery2 WHERE topic_id="1042656" UNION SELECT * FROM gallery2 WHERE topic_id="695042" UNION SELECT * FROM gallery2 WHERE topic_id="938327" UNION SELECT * FROM gallery2 WHERE topic_id="1195917" UNION SELECT * FROM gallery2 WHERE topic_id="701070" UNION SELECT * FROM gallery2 WHERE topic_id="864277"