left or right

SELECT * FROM gallery2 WHERE topic_id="142661" UNION SELECT * FROM gallery2 WHERE topic_id="246617" UNION SELECT * FROM gallery2 WHERE topic_id="1285108" UNION SELECT * FROM gallery2 WHERE topic_id="1570007" UNION SELECT * FROM gallery2 WHERE topic_id="308749" UNION SELECT * FROM gallery2 WHERE topic_id="40189" UNION SELECT * FROM gallery2 WHERE topic_id="87931" UNION SELECT * FROM gallery2 WHERE topic_id="1522633" UNION SELECT * FROM gallery2 WHERE topic_id="1281126" UNION SELECT * FROM gallery2 WHERE topic_id="144189" UNION SELECT * FROM gallery2 WHERE topic_id="1176046" UNION SELECT * FROM gallery2 WHERE topic_id="921982" UNION SELECT * FROM gallery2 WHERE topic_id="923061" UNION SELECT * FROM gallery2 WHERE topic_id="43825" UNION SELECT * FROM gallery2 WHERE topic_id="1049934" UNION SELECT * FROM gallery2 WHERE topic_id="448301"