Pick one. [2]

SELECT * FROM gallery2 WHERE topic_id="1821319" UNION SELECT * FROM gallery2 WHERE topic_id="313288" UNION SELECT * FROM gallery2 WHERE topic_id="869926" UNION SELECT * FROM gallery2 WHERE topic_id="863382" UNION SELECT * FROM gallery2 WHERE topic_id="475968" UNION SELECT * FROM gallery2 WHERE topic_id="180424" UNION SELECT * FROM gallery2 WHERE topic_id="41269" UNION SELECT * FROM gallery2 WHERE topic_id="194706" UNION SELECT * FROM gallery2 WHERE topic_id="747895" UNION SELECT * FROM gallery2 WHERE topic_id="896019" UNION SELECT * FROM gallery2 WHERE topic_id="290080" UNION SELECT * FROM gallery2 WHERE topic_id="1454420" UNION SELECT * FROM gallery2 WHERE topic_id="771713" UNION SELECT * FROM gallery2 WHERE topic_id="1569479" UNION SELECT * FROM gallery2 WHERE topic_id="337654" UNION SELECT * FROM gallery2 WHERE topic_id="123120"