Perfect

SELECT * FROM gallery2 WHERE topic_id="689646" UNION SELECT * FROM gallery2 WHERE topic_id="375175" UNION SELECT * FROM gallery2 WHERE topic_id="333713" UNION SELECT * FROM gallery2 WHERE topic_id="175352" UNION SELECT * FROM gallery2 WHERE topic_id="236599" UNION SELECT * FROM gallery2 WHERE topic_id="1001071" UNION SELECT * FROM gallery2 WHERE topic_id="111229" UNION SELECT * FROM gallery2 WHERE topic_id="1781770" UNION SELECT * FROM gallery2 WHERE topic_id="1627830" UNION SELECT * FROM gallery2 WHERE topic_id="512060" UNION SELECT * FROM gallery2 WHERE topic_id="642212" UNION SELECT * FROM gallery2 WHERE topic_id="993531" UNION SELECT * FROM gallery2 WHERE topic_id="1539888" UNION SELECT * FROM gallery2 WHERE topic_id="484955" UNION SELECT * FROM gallery2 WHERE topic_id="766217" UNION SELECT * FROM gallery2 WHERE topic_id="979506"