Perfect

SELECT * FROM gallery2 WHERE topic_id="545230" UNION SELECT * FROM gallery2 WHERE topic_id="1643587" UNION SELECT * FROM gallery2 WHERE topic_id="1812060" UNION SELECT * FROM gallery2 WHERE topic_id="213595" UNION SELECT * FROM gallery2 WHERE topic_id="586298" UNION SELECT * FROM gallery2 WHERE topic_id="753582" UNION SELECT * FROM gallery2 WHERE topic_id="1784283" UNION SELECT * FROM gallery2 WHERE topic_id="1804311" UNION SELECT * FROM gallery2 WHERE topic_id="754035" UNION SELECT * FROM gallery2 WHERE topic_id="1071373" UNION SELECT * FROM gallery2 WHERE topic_id="774946" UNION SELECT * FROM gallery2 WHERE topic_id="1585121" UNION SELECT * FROM gallery2 WHERE topic_id="1166411" UNION SELECT * FROM gallery2 WHERE topic_id="131545" UNION SELECT * FROM gallery2 WHERE topic_id="730767" UNION SELECT * FROM gallery2 WHERE topic_id="915415"