How do you compare?

SELECT * FROM gallery2 WHERE topic_id="1443644" UNION SELECT * FROM gallery2 WHERE topic_id="1138424" UNION SELECT * FROM gallery2 WHERE topic_id="937932" UNION SELECT * FROM gallery2 WHERE topic_id="1474129" UNION SELECT * FROM gallery2 WHERE topic_id="1214925" UNION SELECT * FROM gallery2 WHERE topic_id="570527" UNION SELECT * FROM gallery2 WHERE topic_id="1820745" UNION SELECT * FROM gallery2 WHERE topic_id="1740168" UNION SELECT * FROM gallery2 WHERE topic_id="972612" UNION SELECT * FROM gallery2 WHERE topic_id="686148" UNION SELECT * FROM gallery2 WHERE topic_id="1430903" UNION SELECT * FROM gallery2 WHERE topic_id="304297" UNION SELECT * FROM gallery2 WHERE topic_id="1767086" UNION SELECT * FROM gallery2 WHERE topic_id="689744" UNION SELECT * FROM gallery2 WHERE topic_id="822103" UNION SELECT * FROM gallery2 WHERE topic_id="1135113"