Double trouble

SELECT * FROM gallery2 WHERE topic_id="1791542" UNION SELECT * FROM gallery2 WHERE topic_id="958398" UNION SELECT * FROM gallery2 WHERE topic_id="1522100" UNION SELECT * FROM gallery2 WHERE topic_id="1681045" UNION SELECT * FROM gallery2 WHERE topic_id="203922" UNION SELECT * FROM gallery2 WHERE topic_id="260506" UNION SELECT * FROM gallery2 WHERE topic_id="1230152" UNION SELECT * FROM gallery2 WHERE topic_id="945947" UNION SELECT * FROM gallery2 WHERE topic_id="691559" UNION SELECT * FROM gallery2 WHERE topic_id="135908" UNION SELECT * FROM gallery2 WHERE topic_id="1337808" UNION SELECT * FROM gallery2 WHERE topic_id="1380922" UNION SELECT * FROM gallery2 WHERE topic_id="235361" UNION SELECT * FROM gallery2 WHERE topic_id="957800" UNION SELECT * FROM gallery2 WHERE topic_id="11210" UNION SELECT * FROM gallery2 WHERE topic_id="139790"