size comparison

SELECT * FROM gallery2 WHERE topic_id="1454820" UNION SELECT * FROM gallery2 WHERE topic_id="1259196" UNION SELECT * FROM gallery2 WHERE topic_id="995244" UNION SELECT * FROM gallery2 WHERE topic_id="624894" UNION SELECT * FROM gallery2 WHERE topic_id="1339720" UNION SELECT * FROM gallery2 WHERE topic_id="71147" UNION SELECT * FROM gallery2 WHERE topic_id="19495" UNION SELECT * FROM gallery2 WHERE topic_id="1466976" UNION SELECT * FROM gallery2 WHERE topic_id="1137519" UNION SELECT * FROM gallery2 WHERE topic_id="1643082" UNION SELECT * FROM gallery2 WHERE topic_id="825006" UNION SELECT * FROM gallery2 WHERE topic_id="1042934" UNION SELECT * FROM gallery2 WHERE topic_id="1116662" UNION SELECT * FROM gallery2 WHERE topic_id="771220" UNION SELECT * FROM gallery2 WHERE topic_id="596671" UNION SELECT * FROM gallery2 WHERE topic_id="1648038"