Coarse

SELECT * FROM gallery2 WHERE topic_id="593764" UNION SELECT * FROM gallery2 WHERE topic_id="1237551" UNION SELECT * FROM gallery2 WHERE topic_id="1692713" UNION SELECT * FROM gallery2 WHERE topic_id="1509175" UNION SELECT * FROM gallery2 WHERE topic_id="669989" UNION SELECT * FROM gallery2 WHERE topic_id="1047611" UNION SELECT * FROM gallery2 WHERE topic_id="418010" UNION SELECT * FROM gallery2 WHERE topic_id="952089" UNION SELECT * FROM gallery2 WHERE topic_id="1689761" UNION SELECT * FROM gallery2 WHERE topic_id="1361212" UNION SELECT * FROM gallery2 WHERE topic_id="86004" UNION SELECT * FROM gallery2 WHERE topic_id="265149" UNION SELECT * FROM gallery2 WHERE topic_id="704499" UNION SELECT * FROM gallery2 WHERE topic_id="100721" UNION SELECT * FROM gallery2 WHERE topic_id="1588854" UNION SELECT * FROM gallery2 WHERE topic_id="1120465"