Perfect

SELECT * FROM gallery2 WHERE topic_id="251119" UNION SELECT * FROM gallery2 WHERE topic_id="1448115" UNION SELECT * FROM gallery2 WHERE topic_id="871649" UNION SELECT * FROM gallery2 WHERE topic_id="1195809" UNION SELECT * FROM gallery2 WHERE topic_id="1522892" UNION SELECT * FROM gallery2 WHERE topic_id="464547" UNION SELECT * FROM gallery2 WHERE topic_id="1142062" UNION SELECT * FROM gallery2 WHERE topic_id="471919" UNION SELECT * FROM gallery2 WHERE topic_id="313331" UNION SELECT * FROM gallery2 WHERE topic_id="92637" UNION SELECT * FROM gallery2 WHERE topic_id="1608885" UNION SELECT * FROM gallery2 WHERE topic_id="1285489" UNION SELECT * FROM gallery2 WHERE topic_id="1400153" UNION SELECT * FROM gallery2 WHERE topic_id="1087726" UNION SELECT * FROM gallery2 WHERE topic_id="1559786" UNION SELECT * FROM gallery2 WHERE topic_id="1796631"