Left or Right

SELECT * FROM gallery2 WHERE topic_id="1708725" UNION SELECT * FROM gallery2 WHERE topic_id="911544" UNION SELECT * FROM gallery2 WHERE topic_id="741234" UNION SELECT * FROM gallery2 WHERE topic_id="1820341" UNION SELECT * FROM gallery2 WHERE topic_id="1000202" UNION SELECT * FROM gallery2 WHERE topic_id="895187" UNION SELECT * FROM gallery2 WHERE topic_id="601277" UNION SELECT * FROM gallery2 WHERE topic_id="655320" UNION SELECT * FROM gallery2 WHERE topic_id="635291" UNION SELECT * FROM gallery2 WHERE topic_id="243954" UNION SELECT * FROM gallery2 WHERE topic_id="646604" UNION SELECT * FROM gallery2 WHERE topic_id="529253" UNION SELECT * FROM gallery2 WHERE topic_id="1147533" UNION SELECT * FROM gallery2 WHERE topic_id="1387750" UNION SELECT * FROM gallery2 WHERE topic_id="1459836" UNION SELECT * FROM gallery2 WHERE topic_id="1528050"