Classy

SELECT * FROM gallery2 WHERE topic_id="1515537" UNION SELECT * FROM gallery2 WHERE topic_id="1154648" UNION SELECT * FROM gallery2 WHERE topic_id="1496190" UNION SELECT * FROM gallery2 WHERE topic_id="1329841" UNION SELECT * FROM gallery2 WHERE topic_id="1777265" UNION SELECT * FROM gallery2 WHERE topic_id="23598" UNION SELECT * FROM gallery2 WHERE topic_id="772800" UNION SELECT * FROM gallery2 WHERE topic_id="863188" UNION SELECT * FROM gallery2 WHERE topic_id="161654" UNION SELECT * FROM gallery2 WHERE topic_id="1130094" UNION SELECT * FROM gallery2 WHERE topic_id="47545" UNION SELECT * FROM gallery2 WHERE topic_id="333693" UNION SELECT * FROM gallery2 WHERE topic_id="515502" UNION SELECT * FROM gallery2 WHERE topic_id="589390" UNION SELECT * FROM gallery2 WHERE topic_id="93567" UNION SELECT * FROM gallery2 WHERE topic_id="1398094"