Left or right

SELECT * FROM gallery2 WHERE topic_id="31568" UNION SELECT * FROM gallery2 WHERE topic_id="780429" UNION SELECT * FROM gallery2 WHERE topic_id="123366" UNION SELECT * FROM gallery2 WHERE topic_id="1751189" UNION SELECT * FROM gallery2 WHERE topic_id="1451044" UNION SELECT * FROM gallery2 WHERE topic_id="1637606" UNION SELECT * FROM gallery2 WHERE topic_id="77587" UNION SELECT * FROM gallery2 WHERE topic_id="1226135" UNION SELECT * FROM gallery2 WHERE topic_id="120944" UNION SELECT * FROM gallery2 WHERE topic_id="351097" UNION SELECT * FROM gallery2 WHERE topic_id="1180196" UNION SELECT * FROM gallery2 WHERE topic_id="1294838" UNION SELECT * FROM gallery2 WHERE topic_id="37658" UNION SELECT * FROM gallery2 WHERE topic_id="526874" UNION SELECT * FROM gallery2 WHERE topic_id="398627" UNION SELECT * FROM gallery2 WHERE topic_id="707329"