Chained up

SELECT * FROM gallery2 WHERE topic_id="1616830" UNION SELECT * FROM gallery2 WHERE topic_id="1733782" UNION SELECT * FROM gallery2 WHERE topic_id="1173737" UNION SELECT * FROM gallery2 WHERE topic_id="9413" UNION SELECT * FROM gallery2 WHERE topic_id="1341182" UNION SELECT * FROM gallery2 WHERE topic_id="1535528" UNION SELECT * FROM gallery2 WHERE topic_id="745657" UNION SELECT * FROM gallery2 WHERE topic_id="587267" UNION SELECT * FROM gallery2 WHERE topic_id="1153042" UNION SELECT * FROM gallery2 WHERE topic_id="941523" UNION SELECT * FROM gallery2 WHERE topic_id="550147" UNION SELECT * FROM gallery2 WHERE topic_id="907821" UNION SELECT * FROM gallery2 WHERE topic_id="208432" UNION SELECT * FROM gallery2 WHERE topic_id="1020763" UNION SELECT * FROM gallery2 WHERE topic_id="1479875" UNION SELECT * FROM gallery2 WHERE topic_id="1401467"