Wanna join

SELECT * FROM gallery2 WHERE topic_id="450077" UNION SELECT * FROM gallery2 WHERE topic_id="5947" UNION SELECT * FROM gallery2 WHERE topic_id="1208144" UNION SELECT * FROM gallery2 WHERE topic_id="1035586" UNION SELECT * FROM gallery2 WHERE topic_id="1100645" UNION SELECT * FROM gallery2 WHERE topic_id="1517500" UNION SELECT * FROM gallery2 WHERE topic_id="52231" UNION SELECT * FROM gallery2 WHERE topic_id="1436875" UNION SELECT * FROM gallery2 WHERE topic_id="1551234" UNION SELECT * FROM gallery2 WHERE topic_id="1749045" UNION SELECT * FROM gallery2 WHERE topic_id="568171" UNION SELECT * FROM gallery2 WHERE topic_id="1252875" UNION SELECT * FROM gallery2 WHERE topic_id="1557066" UNION SELECT * FROM gallery2 WHERE topic_id="439656" UNION SELECT * FROM gallery2 WHERE topic_id="447607" UNION SELECT * FROM gallery2 WHERE topic_id="164988"