[20] Pretty tight

SELECT * FROM gallery2 WHERE topic_id="1168340" UNION SELECT * FROM gallery2 WHERE topic_id="1636800" UNION SELECT * FROM gallery2 WHERE topic_id="115190" UNION SELECT * FROM gallery2 WHERE topic_id="178371" UNION SELECT * FROM gallery2 WHERE topic_id="816158" UNION SELECT * FROM gallery2 WHERE topic_id="1520864" UNION SELECT * FROM gallery2 WHERE topic_id="1000756" UNION SELECT * FROM gallery2 WHERE topic_id="1353326" UNION SELECT * FROM gallery2 WHERE topic_id="248295" UNION SELECT * FROM gallery2 WHERE topic_id="812857" UNION SELECT * FROM gallery2 WHERE topic_id="1521167" UNION SELECT * FROM gallery2 WHERE topic_id="1314108" UNION SELECT * FROM gallery2 WHERE topic_id="1593604" UNION SELECT * FROM gallery2 WHERE topic_id="1335043" UNION SELECT * FROM gallery2 WHERE topic_id="354254" UNION SELECT * FROM gallery2 WHERE topic_id="1235829"