Guess what I'm missing

SELECT * FROM gallery2 WHERE topic_id="577469" UNION SELECT * FROM gallery2 WHERE topic_id="669973" UNION SELECT * FROM gallery2 WHERE topic_id="430535" UNION SELECT * FROM gallery2 WHERE topic_id="1599705" UNION SELECT * FROM gallery2 WHERE topic_id="1100693" UNION SELECT * FROM gallery2 WHERE topic_id="1612810" UNION SELECT * FROM gallery2 WHERE topic_id="1226516" UNION SELECT * FROM gallery2 WHERE topic_id="86795" UNION SELECT * FROM gallery2 WHERE topic_id="737266" UNION SELECT * FROM gallery2 WHERE topic_id="1258044" UNION SELECT * FROM gallery2 WHERE topic_id="366928" UNION SELECT * FROM gallery2 WHERE topic_id="1574478" UNION SELECT * FROM gallery2 WHERE topic_id="304491" UNION SELECT * FROM gallery2 WHERE topic_id="639946" UNION SELECT * FROM gallery2 WHERE topic_id="787978" UNION SELECT * FROM gallery2 WHERE topic_id="1748524"