[2] Selection process

SELECT * FROM gallery2 WHERE topic_id="1578122" UNION SELECT * FROM gallery2 WHERE topic_id="161269" UNION SELECT * FROM gallery2 WHERE topic_id="270615" UNION SELECT * FROM gallery2 WHERE topic_id="967269" UNION SELECT * FROM gallery2 WHERE topic_id="1809329" UNION SELECT * FROM gallery2 WHERE topic_id="1539835" UNION SELECT * FROM gallery2 WHERE topic_id="1568972" UNION SELECT * FROM gallery2 WHERE topic_id="1507087" UNION SELECT * FROM gallery2 WHERE topic_id="1635703" UNION SELECT * FROM gallery2 WHERE topic_id="1730726" UNION SELECT * FROM gallery2 WHERE topic_id="537532" UNION SELECT * FROM gallery2 WHERE topic_id="544122" UNION SELECT * FROM gallery2 WHERE topic_id="596370" UNION SELECT * FROM gallery2 WHERE topic_id="1081834" UNION SELECT * FROM gallery2 WHERE topic_id="689899" UNION SELECT * FROM gallery2 WHERE topic_id="358192"