Hiding impossible

SELECT * FROM gallery2 WHERE topic_id="906369" UNION SELECT * FROM gallery2 WHERE topic_id="585748" UNION SELECT * FROM gallery2 WHERE topic_id="332948" UNION SELECT * FROM gallery2 WHERE topic_id="1655156" UNION SELECT * FROM gallery2 WHERE topic_id="45540" UNION SELECT * FROM gallery2 WHERE topic_id="1330001" UNION SELECT * FROM gallery2 WHERE topic_id="1246566" UNION SELECT * FROM gallery2 WHERE topic_id="1448864" UNION SELECT * FROM gallery2 WHERE topic_id="713827" UNION SELECT * FROM gallery2 WHERE topic_id="200838" UNION SELECT * FROM gallery2 WHERE topic_id="949420" UNION SELECT * FROM gallery2 WHERE topic_id="522189" UNION SELECT * FROM gallery2 WHERE topic_id="1408650" UNION SELECT * FROM gallery2 WHERE topic_id="1785783" UNION SELECT * FROM gallery2 WHERE topic_id="1316389" UNION SELECT * FROM gallery2 WHERE topic_id="764536"