Very tight

SELECT * FROM gallery2 WHERE topic_id="505656" UNION SELECT * FROM gallery2 WHERE topic_id="1431978" UNION SELECT * FROM gallery2 WHERE topic_id="983047" UNION SELECT * FROM gallery2 WHERE topic_id="151207" UNION SELECT * FROM gallery2 WHERE topic_id="1338932" UNION SELECT * FROM gallery2 WHERE topic_id="691114" UNION SELECT * FROM gallery2 WHERE topic_id="592171" UNION SELECT * FROM gallery2 WHERE topic_id="1086864" UNION SELECT * FROM gallery2 WHERE topic_id="234921" UNION SELECT * FROM gallery2 WHERE topic_id="1372810" UNION SELECT * FROM gallery2 WHERE topic_id="235997" UNION SELECT * FROM gallery2 WHERE topic_id="1733531" UNION SELECT * FROM gallery2 WHERE topic_id="1300303" UNION SELECT * FROM gallery2 WHERE topic_id="92163" UNION SELECT * FROM gallery2 WHERE topic_id="27261" UNION SELECT * FROM gallery2 WHERE topic_id="283575"