three stages (@lancer24ac)

SELECT * FROM gallery2 WHERE topic_id="813058" UNION SELECT * FROM gallery2 WHERE topic_id="770810" UNION SELECT * FROM gallery2 WHERE topic_id="947323" UNION SELECT * FROM gallery2 WHERE topic_id="1257897" UNION SELECT * FROM gallery2 WHERE topic_id="676372" UNION SELECT * FROM gallery2 WHERE topic_id="369549" UNION SELECT * FROM gallery2 WHERE topic_id="1431231" UNION SELECT * FROM gallery2 WHERE topic_id="583162" UNION SELECT * FROM gallery2 WHERE topic_id="1332088" UNION SELECT * FROM gallery2 WHERE topic_id="1585795" UNION SELECT * FROM gallery2 WHERE topic_id="525409" UNION SELECT * FROM gallery2 WHERE topic_id="1538623" UNION SELECT * FROM gallery2 WHERE topic_id="1525697" UNION SELECT * FROM gallery2 WHERE topic_id="1678878" UNION SELECT * FROM gallery2 WHERE topic_id="1632863" UNION SELECT * FROM gallery2 WHERE topic_id="568765"