Perfect

SELECT * FROM gallery2 WHERE topic_id="1374880" UNION SELECT * FROM gallery2 WHERE topic_id="498308" UNION SELECT * FROM gallery2 WHERE topic_id="4672" UNION SELECT * FROM gallery2 WHERE topic_id="992540" UNION SELECT * FROM gallery2 WHERE topic_id="1463429" UNION SELECT * FROM gallery2 WHERE topic_id="1382591" UNION SELECT * FROM gallery2 WHERE topic_id="1594173" UNION SELECT * FROM gallery2 WHERE topic_id="554176" UNION SELECT * FROM gallery2 WHERE topic_id="6508" UNION SELECT * FROM gallery2 WHERE topic_id="1410437" UNION SELECT * FROM gallery2 WHERE topic_id="968048" UNION SELECT * FROM gallery2 WHERE topic_id="1437693" UNION SELECT * FROM gallery2 WHERE topic_id="335006" UNION SELECT * FROM gallery2 WHERE topic_id="363812" UNION SELECT * FROM gallery2 WHERE topic_id="945069" UNION SELECT * FROM gallery2 WHERE topic_id="1486179"