Barely contained (OC)

SELECT * FROM gallery2 WHERE topic_id="1791101" UNION SELECT * FROM gallery2 WHERE topic_id="1160534" UNION SELECT * FROM gallery2 WHERE topic_id="100482" UNION SELECT * FROM gallery2 WHERE topic_id="517435" UNION SELECT * FROM gallery2 WHERE topic_id="334247" UNION SELECT * FROM gallery2 WHERE topic_id="588759" UNION SELECT * FROM gallery2 WHERE topic_id="993865" UNION SELECT * FROM gallery2 WHERE topic_id="157084" UNION SELECT * FROM gallery2 WHERE topic_id="1575387" UNION SELECT * FROM gallery2 WHERE topic_id="939549" UNION SELECT * FROM gallery2 WHERE topic_id="1728871" UNION SELECT * FROM gallery2 WHERE topic_id="292983" UNION SELECT * FROM gallery2 WHERE topic_id="794560" UNION SELECT * FROM gallery2 WHERE topic_id="774745" UNION SELECT * FROM gallery2 WHERE topic_id="985744" UNION SELECT * FROM gallery2 WHERE topic_id="1772587"