Not perfect but definitely doable

SELECT * FROM gallery2 WHERE topic_id="216069" UNION SELECT * FROM gallery2 WHERE topic_id="1474835" UNION SELECT * FROM gallery2 WHERE topic_id="321698" UNION SELECT * FROM gallery2 WHERE topic_id="139352" UNION SELECT * FROM gallery2 WHERE topic_id="1048424" UNION SELECT * FROM gallery2 WHERE topic_id="693892" UNION SELECT * FROM gallery2 WHERE topic_id="440434" UNION SELECT * FROM gallery2 WHERE topic_id="1489683" UNION SELECT * FROM gallery2 WHERE topic_id="50998" UNION SELECT * FROM gallery2 WHERE topic_id="1724030" UNION SELECT * FROM gallery2 WHERE topic_id="393102" UNION SELECT * FROM gallery2 WHERE topic_id="1402728" UNION SELECT * FROM gallery2 WHERE topic_id="1288445" UNION SELECT * FROM gallery2 WHERE topic_id="886986" UNION SELECT * FROM gallery2 WHERE topic_id="628352" UNION SELECT * FROM gallery2 WHERE topic_id="1024206"