Smallest one so far

SELECT * FROM gallery2 WHERE topic_id="27531" UNION SELECT * FROM gallery2 WHERE topic_id="34101" UNION SELECT * FROM gallery2 WHERE topic_id="1022241" UNION SELECT * FROM gallery2 WHERE topic_id="1456255" UNION SELECT * FROM gallery2 WHERE topic_id="469486" UNION SELECT * FROM gallery2 WHERE topic_id="1231441" UNION SELECT * FROM gallery2 WHERE topic_id="341778" UNION SELECT * FROM gallery2 WHERE topic_id="1413843" UNION SELECT * FROM gallery2 WHERE topic_id="494920" UNION SELECT * FROM gallery2 WHERE topic_id="1149420" UNION SELECT * FROM gallery2 WHERE topic_id="242980" UNION SELECT * FROM gallery2 WHERE topic_id="606064" UNION SELECT * FROM gallery2 WHERE topic_id="1478137" UNION SELECT * FROM gallery2 WHERE topic_id="182563" UNION SELECT * FROM gallery2 WHERE topic_id="1545968" UNION SELECT * FROM gallery2 WHERE topic_id="1472081"