great question

SELECT * FROM gallery2 WHERE topic_id="467108" UNION SELECT * FROM gallery2 WHERE topic_id="1357550" UNION SELECT * FROM gallery2 WHERE topic_id="1525859" UNION SELECT * FROM gallery2 WHERE topic_id="756732" UNION SELECT * FROM gallery2 WHERE topic_id="1456928" UNION SELECT * FROM gallery2 WHERE topic_id="1551012" UNION SELECT * FROM gallery2 WHERE topic_id="988718" UNION SELECT * FROM gallery2 WHERE topic_id="1661305" UNION SELECT * FROM gallery2 WHERE topic_id="1148091" UNION SELECT * FROM gallery2 WHERE topic_id="100570" UNION SELECT * FROM gallery2 WHERE topic_id="34122" UNION SELECT * FROM gallery2 WHERE topic_id="674103" UNION SELECT * FROM gallery2 WHERE topic_id="829456" UNION SELECT * FROM gallery2 WHERE topic_id="1718863" UNION SELECT * FROM gallery2 WHERE topic_id="1523175" UNION SELECT * FROM gallery2 WHERE topic_id="1760464"