Perfecto

SELECT * FROM gallery2 WHERE topic_id="864595" UNION SELECT * FROM gallery2 WHERE topic_id="1623572" UNION SELECT * FROM gallery2 WHERE topic_id="717164" UNION SELECT * FROM gallery2 WHERE topic_id="785801" UNION SELECT * FROM gallery2 WHERE topic_id="1824039" UNION SELECT * FROM gallery2 WHERE topic_id="1799956" UNION SELECT * FROM gallery2 WHERE topic_id="408518" UNION SELECT * FROM gallery2 WHERE topic_id="1669314" UNION SELECT * FROM gallery2 WHERE topic_id="1042800" UNION SELECT * FROM gallery2 WHERE topic_id="1320282" UNION SELECT * FROM gallery2 WHERE topic_id="1759078" UNION SELECT * FROM gallery2 WHERE topic_id="1718443" UNION SELECT * FROM gallery2 WHERE topic_id="195780" UNION SELECT * FROM gallery2 WHERE topic_id="886056" UNION SELECT * FROM gallery2 WHERE topic_id="380577" UNION SELECT * FROM gallery2 WHERE topic_id="1121315"