left or right

SELECT * FROM gallery2 WHERE topic_id="902380" UNION SELECT * FROM gallery2 WHERE topic_id="1711673" UNION SELECT * FROM gallery2 WHERE topic_id="186605" UNION SELECT * FROM gallery2 WHERE topic_id="1526374" UNION SELECT * FROM gallery2 WHERE topic_id="806190" UNION SELECT * FROM gallery2 WHERE topic_id="865265" UNION SELECT * FROM gallery2 WHERE topic_id="1822943" UNION SELECT * FROM gallery2 WHERE topic_id="1219506" UNION SELECT * FROM gallery2 WHERE topic_id="1796904" UNION SELECT * FROM gallery2 WHERE topic_id="417701" UNION SELECT * FROM gallery2 WHERE topic_id="1390349" UNION SELECT * FROM gallery2 WHERE topic_id="87147" UNION SELECT * FROM gallery2 WHERE topic_id="122194" UNION SELECT * FROM gallery2 WHERE topic_id="367933" UNION SELECT * FROM gallery2 WHERE topic_id="1484301" UNION SELECT * FROM gallery2 WHERE topic_id="1690028"