Stacked

SELECT * FROM gallery2 WHERE topic_id="789147" UNION SELECT * FROM gallery2 WHERE topic_id="779063" UNION SELECT * FROM gallery2 WHERE topic_id="815317" UNION SELECT * FROM gallery2 WHERE topic_id="1393387" UNION SELECT * FROM gallery2 WHERE topic_id="776705" UNION SELECT * FROM gallery2 WHERE topic_id="1126403" UNION SELECT * FROM gallery2 WHERE topic_id="1603135" UNION SELECT * FROM gallery2 WHERE topic_id="1241078" UNION SELECT * FROM gallery2 WHERE topic_id="1822381" UNION SELECT * FROM gallery2 WHERE topic_id="553711" UNION SELECT * FROM gallery2 WHERE topic_id="1375217" UNION SELECT * FROM gallery2 WHERE topic_id="1390778" UNION SELECT * FROM gallery2 WHERE topic_id="1323173" UNION SELECT * FROM gallery2 WHERE topic_id="787977" UNION SELECT * FROM gallery2 WHERE topic_id="356606" UNION SELECT * FROM gallery2 WHERE topic_id="687575"