Fancy like

SELECT * FROM gallery2 WHERE topic_id="1029723" UNION SELECT * FROM gallery2 WHERE topic_id="826998" UNION SELECT * FROM gallery2 WHERE topic_id="669729" UNION SELECT * FROM gallery2 WHERE topic_id="1112738" UNION SELECT * FROM gallery2 WHERE topic_id="628765" UNION SELECT * FROM gallery2 WHERE topic_id="1501573" UNION SELECT * FROM gallery2 WHERE topic_id="1817644" UNION SELECT * FROM gallery2 WHERE topic_id="1695164" UNION SELECT * FROM gallery2 WHERE topic_id="552156" UNION SELECT * FROM gallery2 WHERE topic_id="1378327" UNION SELECT * FROM gallery2 WHERE topic_id="1406307" UNION SELECT * FROM gallery2 WHERE topic_id="551356" UNION SELECT * FROM gallery2 WHERE topic_id="232141" UNION SELECT * FROM gallery2 WHERE topic_id="980077" UNION SELECT * FROM gallery2 WHERE topic_id="479128" UNION SELECT * FROM gallery2 WHERE topic_id="628679"