Almost there

SELECT * FROM gallery2 WHERE topic_id="1073326" UNION SELECT * FROM gallery2 WHERE topic_id="904015" UNION SELECT * FROM gallery2 WHERE topic_id="1000354" UNION SELECT * FROM gallery2 WHERE topic_id="1008299" UNION SELECT * FROM gallery2 WHERE topic_id="259061" UNION SELECT * FROM gallery2 WHERE topic_id="1531294" UNION SELECT * FROM gallery2 WHERE topic_id="723680" UNION SELECT * FROM gallery2 WHERE topic_id="367734" UNION SELECT * FROM gallery2 WHERE topic_id="757078" UNION SELECT * FROM gallery2 WHERE topic_id="1099979" UNION SELECT * FROM gallery2 WHERE topic_id="592916" UNION SELECT * FROM gallery2 WHERE topic_id="302762" UNION SELECT * FROM gallery2 WHERE topic_id="1343406" UNION SELECT * FROM gallery2 WHERE topic_id="473685" UNION SELECT * FROM gallery2 WHERE topic_id="47363" UNION SELECT * FROM gallery2 WHERE topic_id="891928"