Sometimes less is more

SELECT * FROM gallery2 WHERE topic_id="1816461" UNION SELECT * FROM gallery2 WHERE topic_id="1007284" UNION SELECT * FROM gallery2 WHERE topic_id="1774716" UNION SELECT * FROM gallery2 WHERE topic_id="183589" UNION SELECT * FROM gallery2 WHERE topic_id="1681448" UNION SELECT * FROM gallery2 WHERE topic_id="526450" UNION SELECT * FROM gallery2 WHERE topic_id="856098" UNION SELECT * FROM gallery2 WHERE topic_id="503342" UNION SELECT * FROM gallery2 WHERE topic_id="1571417" UNION SELECT * FROM gallery2 WHERE topic_id="1450647" UNION SELECT * FROM gallery2 WHERE topic_id="1350609" UNION SELECT * FROM gallery2 WHERE topic_id="646895" UNION SELECT * FROM gallery2 WHERE topic_id="1437693" UNION SELECT * FROM gallery2 WHERE topic_id="186035" UNION SELECT * FROM gallery2 WHERE topic_id="408687" UNION SELECT * FROM gallery2 WHERE topic_id="1698448"