Perfect

SELECT * FROM gallery2 WHERE topic_id="1622164" UNION SELECT * FROM gallery2 WHERE topic_id="172442" UNION SELECT * FROM gallery2 WHERE topic_id="1151036" UNION SELECT * FROM gallery2 WHERE topic_id="1662566" UNION SELECT * FROM gallery2 WHERE topic_id="86124" UNION SELECT * FROM gallery2 WHERE topic_id="766843" UNION SELECT * FROM gallery2 WHERE topic_id="539579" UNION SELECT * FROM gallery2 WHERE topic_id="379830" UNION SELECT * FROM gallery2 WHERE topic_id="1240859" UNION SELECT * FROM gallery2 WHERE topic_id="949918" UNION SELECT * FROM gallery2 WHERE topic_id="534821" UNION SELECT * FROM gallery2 WHERE topic_id="707444" UNION SELECT * FROM gallery2 WHERE topic_id="983683" UNION SELECT * FROM gallery2 WHERE topic_id="722455" UNION SELECT * FROM gallery2 WHERE topic_id="919068" UNION SELECT * FROM gallery2 WHERE topic_id="541413"