Never done anything like this before

SELECT * FROM gallery2 WHERE topic_id="698687" UNION SELECT * FROM gallery2 WHERE topic_id="214332" UNION SELECT * FROM gallery2 WHERE topic_id="1031586" UNION SELECT * FROM gallery2 WHERE topic_id="1215338" UNION SELECT * FROM gallery2 WHERE topic_id="32032" UNION SELECT * FROM gallery2 WHERE topic_id="1787465" UNION SELECT * FROM gallery2 WHERE topic_id="1227488" UNION SELECT * FROM gallery2 WHERE topic_id="1094603" UNION SELECT * FROM gallery2 WHERE topic_id="1090842" UNION SELECT * FROM gallery2 WHERE topic_id="948866" UNION SELECT * FROM gallery2 WHERE topic_id="497649" UNION SELECT * FROM gallery2 WHERE topic_id="577060" UNION SELECT * FROM gallery2 WHERE topic_id="1488078" UNION SELECT * FROM gallery2 WHERE topic_id="981899" UNION SELECT * FROM gallery2 WHERE topic_id="1518332" UNION SELECT * FROM gallery2 WHERE topic_id="1196908"