dm to compare

SELECT * FROM gallery2 WHERE topic_id="1684596" UNION SELECT * FROM gallery2 WHERE topic_id="1268521" UNION SELECT * FROM gallery2 WHERE topic_id="161422" UNION SELECT * FROM gallery2 WHERE topic_id="1198242" UNION SELECT * FROM gallery2 WHERE topic_id="1328078" UNION SELECT * FROM gallery2 WHERE topic_id="1437177" UNION SELECT * FROM gallery2 WHERE topic_id="1457108" UNION SELECT * FROM gallery2 WHERE topic_id="521662" UNION SELECT * FROM gallery2 WHERE topic_id="1390373" UNION SELECT * FROM gallery2 WHERE topic_id="70045" UNION SELECT * FROM gallery2 WHERE topic_id="1578383" UNION SELECT * FROM gallery2 WHERE topic_id="1658839" UNION SELECT * FROM gallery2 WHERE topic_id="1709679" UNION SELECT * FROM gallery2 WHERE topic_id="1139298" UNION SELECT * FROM gallery2 WHERE topic_id="520007" UNION SELECT * FROM gallery2 WHERE topic_id="1256924"