Yor

SELECT * FROM gallery2 WHERE topic_id="1786486" UNION SELECT * FROM gallery2 WHERE topic_id="157422" UNION SELECT * FROM gallery2 WHERE topic_id="455770" UNION SELECT * FROM gallery2 WHERE topic_id="1547537" UNION SELECT * FROM gallery2 WHERE topic_id="1685718" UNION SELECT * FROM gallery2 WHERE topic_id="895680" UNION SELECT * FROM gallery2 WHERE topic_id="334148" UNION SELECT * FROM gallery2 WHERE topic_id="505578" UNION SELECT * FROM gallery2 WHERE topic_id="617464" UNION SELECT * FROM gallery2 WHERE topic_id="490228" UNION SELECT * FROM gallery2 WHERE topic_id="978676" UNION SELECT * FROM gallery2 WHERE topic_id="1381983" UNION SELECT * FROM gallery2 WHERE topic_id="11935" UNION SELECT * FROM gallery2 WHERE topic_id="1079175" UNION SELECT * FROM gallery2 WHERE topic_id="750730" UNION SELECT * FROM gallery2 WHERE topic_id="988061"