Left or right

SELECT * FROM gallery2 WHERE topic_id="1749261" UNION SELECT * FROM gallery2 WHERE topic_id="1732589" UNION SELECT * FROM gallery2 WHERE topic_id="278964" UNION SELECT * FROM gallery2 WHERE topic_id="463535" UNION SELECT * FROM gallery2 WHERE topic_id="429301" UNION SELECT * FROM gallery2 WHERE topic_id="494016" UNION SELECT * FROM gallery2 WHERE topic_id="792981" UNION SELECT * FROM gallery2 WHERE topic_id="473781" UNION SELECT * FROM gallery2 WHERE topic_id="1811925" UNION SELECT * FROM gallery2 WHERE topic_id="1516032" UNION SELECT * FROM gallery2 WHERE topic_id="1210542" UNION SELECT * FROM gallery2 WHERE topic_id="1760535" UNION SELECT * FROM gallery2 WHERE topic_id="409963" UNION SELECT * FROM gallery2 WHERE topic_id="831604" UNION SELECT * FROM gallery2 WHERE topic_id="356619" UNION SELECT * FROM gallery2 WHERE topic_id="374745"