Take your pick

SELECT * FROM gallery2 WHERE topic_id="312451" UNION SELECT * FROM gallery2 WHERE topic_id="1095949" UNION SELECT * FROM gallery2 WHERE topic_id="800779" UNION SELECT * FROM gallery2 WHERE topic_id="6768" UNION SELECT * FROM gallery2 WHERE topic_id="895443" UNION SELECT * FROM gallery2 WHERE topic_id="1099421" UNION SELECT * FROM gallery2 WHERE topic_id="1142758" UNION SELECT * FROM gallery2 WHERE topic_id="1589856" UNION SELECT * FROM gallery2 WHERE topic_id="1603824" UNION SELECT * FROM gallery2 WHERE topic_id="1506256" UNION SELECT * FROM gallery2 WHERE topic_id="244084" UNION SELECT * FROM gallery2 WHERE topic_id="747568" UNION SELECT * FROM gallery2 WHERE topic_id="147165" UNION SELECT * FROM gallery2 WHERE topic_id="1628738" UNION SELECT * FROM gallery2 WHERE topic_id="575472" UNION SELECT * FROM gallery2 WHERE topic_id="336770"