left or right

SELECT * FROM gallery2 WHERE topic_id="1717829" UNION SELECT * FROM gallery2 WHERE topic_id="1534436" UNION SELECT * FROM gallery2 WHERE topic_id="1592358" UNION SELECT * FROM gallery2 WHERE topic_id="1698740" UNION SELECT * FROM gallery2 WHERE topic_id="1750801" UNION SELECT * FROM gallery2 WHERE topic_id="1632092" UNION SELECT * FROM gallery2 WHERE topic_id="1321513" UNION SELECT * FROM gallery2 WHERE topic_id="1699873" UNION SELECT * FROM gallery2 WHERE topic_id="1049" UNION SELECT * FROM gallery2 WHERE topic_id="1605624" UNION SELECT * FROM gallery2 WHERE topic_id="1662687" UNION SELECT * FROM gallery2 WHERE topic_id="1022403" UNION SELECT * FROM gallery2 WHERE topic_id="1604512" UNION SELECT * FROM gallery2 WHERE topic_id="743698" UNION SELECT * FROM gallery2 WHERE topic_id="347219" UNION SELECT * FROM gallery2 WHERE topic_id="314049"