Lazy

SELECT * FROM gallery2 WHERE topic_id="503250" UNION SELECT * FROM gallery2 WHERE topic_id="1176340" UNION SELECT * FROM gallery2 WHERE topic_id="808957" UNION SELECT * FROM gallery2 WHERE topic_id="1258478" UNION SELECT * FROM gallery2 WHERE topic_id="1436190" UNION SELECT * FROM gallery2 WHERE topic_id="1102664" UNION SELECT * FROM gallery2 WHERE topic_id="639737" UNION SELECT * FROM gallery2 WHERE topic_id="1597401" UNION SELECT * FROM gallery2 WHERE topic_id="583658" UNION SELECT * FROM gallery2 WHERE topic_id="904906" UNION SELECT * FROM gallery2 WHERE topic_id="1803201" UNION SELECT * FROM gallery2 WHERE topic_id="318501" UNION SELECT * FROM gallery2 WHERE topic_id="1368281" UNION SELECT * FROM gallery2 WHERE topic_id="574501" UNION SELECT * FROM gallery2 WHERE topic_id="41794" UNION SELECT * FROM gallery2 WHERE topic_id="240396"