I hope you like

SELECT * FROM gallery2 WHERE topic_id="612000" UNION SELECT * FROM gallery2 WHERE topic_id="469960" UNION SELECT * FROM gallery2 WHERE topic_id="641479" UNION SELECT * FROM gallery2 WHERE topic_id="412277" UNION SELECT * FROM gallery2 WHERE topic_id="675021" UNION SELECT * FROM gallery2 WHERE topic_id="1799260" UNION SELECT * FROM gallery2 WHERE topic_id="77020" UNION SELECT * FROM gallery2 WHERE topic_id="443718" UNION SELECT * FROM gallery2 WHERE topic_id="472132" UNION SELECT * FROM gallery2 WHERE topic_id="589805" UNION SELECT * FROM gallery2 WHERE topic_id="1371237" UNION SELECT * FROM gallery2 WHERE topic_id="100452" UNION SELECT * FROM gallery2 WHERE topic_id="1710145" UNION SELECT * FROM gallery2 WHERE topic_id="12169" UNION SELECT * FROM gallery2 WHERE topic_id="1681754" UNION SELECT * FROM gallery2 WHERE topic_id="265668"