Trial

SELECT * FROM gallery2 WHERE topic_id="1537262" UNION SELECT * FROM gallery2 WHERE topic_id="1341627" UNION SELECT * FROM gallery2 WHERE topic_id="256586" UNION SELECT * FROM gallery2 WHERE topic_id="196617" UNION SELECT * FROM gallery2 WHERE topic_id="1587936" UNION SELECT * FROM gallery2 WHERE topic_id="90957" UNION SELECT * FROM gallery2 WHERE topic_id="1231374" UNION SELECT * FROM gallery2 WHERE topic_id="1173946" UNION SELECT * FROM gallery2 WHERE topic_id="310203" UNION SELECT * FROM gallery2 WHERE topic_id="492200" UNION SELECT * FROM gallery2 WHERE topic_id="1048088" UNION SELECT * FROM gallery2 WHERE topic_id="48030" UNION SELECT * FROM gallery2 WHERE topic_id="169901" UNION SELECT * FROM gallery2 WHERE topic_id="844655" UNION SELECT * FROM gallery2 WHERE topic_id="1144749" UNION SELECT * FROM gallery2 WHERE topic_id="1571340"