Stacked. [F]

SELECT * FROM gallery2 WHERE topic_id="670468" UNION SELECT * FROM gallery2 WHERE topic_id="1790804" UNION SELECT * FROM gallery2 WHERE topic_id="976317" UNION SELECT * FROM gallery2 WHERE topic_id="1072873" UNION SELECT * FROM gallery2 WHERE topic_id="890733" UNION SELECT * FROM gallery2 WHERE topic_id="458263" UNION SELECT * FROM gallery2 WHERE topic_id="829294" UNION SELECT * FROM gallery2 WHERE topic_id="1379776" UNION SELECT * FROM gallery2 WHERE topic_id="1717659" UNION SELECT * FROM gallery2 WHERE topic_id="749929" UNION SELECT * FROM gallery2 WHERE topic_id="769976" UNION SELECT * FROM gallery2 WHERE topic_id="1687933" UNION SELECT * FROM gallery2 WHERE topic_id="1190703" UNION SELECT * FROM gallery2 WHERE topic_id="245772" UNION SELECT * FROM gallery2 WHERE topic_id="1647016" UNION SELECT * FROM gallery2 WHERE topic_id="867319"