Double trouble

SELECT * FROM gallery2 WHERE topic_id="1717290" UNION SELECT * FROM gallery2 WHERE topic_id="838201" UNION SELECT * FROM gallery2 WHERE topic_id="864419" UNION SELECT * FROM gallery2 WHERE topic_id="270145" UNION SELECT * FROM gallery2 WHERE topic_id="1199112" UNION SELECT * FROM gallery2 WHERE topic_id="1530142" UNION SELECT * FROM gallery2 WHERE topic_id="1521953" UNION SELECT * FROM gallery2 WHERE topic_id="693496" UNION SELECT * FROM gallery2 WHERE topic_id="1405940" UNION SELECT * FROM gallery2 WHERE topic_id="454100" UNION SELECT * FROM gallery2 WHERE topic_id="12459" UNION SELECT * FROM gallery2 WHERE topic_id="723032" UNION SELECT * FROM gallery2 WHERE topic_id="1081140" UNION SELECT * FROM gallery2 WHERE topic_id="1749351" UNION SELECT * FROM gallery2 WHERE topic_id="637266" UNION SELECT * FROM gallery2 WHERE topic_id="331295"