Just got back from a trail.

SELECT * FROM gallery2 WHERE topic_id="1248253" UNION SELECT * FROM gallery2 WHERE topic_id="863614" UNION SELECT * FROM gallery2 WHERE topic_id="406873" UNION SELECT * FROM gallery2 WHERE topic_id="701270" UNION SELECT * FROM gallery2 WHERE topic_id="458590" UNION SELECT * FROM gallery2 WHERE topic_id="1810043" UNION SELECT * FROM gallery2 WHERE topic_id="1247385" UNION SELECT * FROM gallery2 WHERE topic_id="355494" UNION SELECT * FROM gallery2 WHERE topic_id="1753186" UNION SELECT * FROM gallery2 WHERE topic_id="1574294" UNION SELECT * FROM gallery2 WHERE topic_id="951324" UNION SELECT * FROM gallery2 WHERE topic_id="1494821" UNION SELECT * FROM gallery2 WHERE topic_id="1189151" UNION SELECT * FROM gallery2 WHERE topic_id="617339" UNION SELECT * FROM gallery2 WHERE topic_id="1150128" UNION SELECT * FROM gallery2 WHERE topic_id="822028"