Potential

SELECT * FROM gallery2 WHERE topic_id="1741871" UNION SELECT * FROM gallery2 WHERE topic_id="46256" UNION SELECT * FROM gallery2 WHERE topic_id="457968" UNION SELECT * FROM gallery2 WHERE topic_id="904457" UNION SELECT * FROM gallery2 WHERE topic_id="1317290" UNION SELECT * FROM gallery2 WHERE topic_id="473587" UNION SELECT * FROM gallery2 WHERE topic_id="90465" UNION SELECT * FROM gallery2 WHERE topic_id="254672" UNION SELECT * FROM gallery2 WHERE topic_id="180459" UNION SELECT * FROM gallery2 WHERE topic_id="628591" UNION SELECT * FROM gallery2 WHERE topic_id="186320" UNION SELECT * FROM gallery2 WHERE topic_id="1280316" UNION SELECT * FROM gallery2 WHERE topic_id="1459317" UNION SELECT * FROM gallery2 WHERE topic_id="572651" UNION SELECT * FROM gallery2 WHERE topic_id="1604428" UNION SELECT * FROM gallery2 WHERE topic_id="425586"