How’s this ?

SELECT * FROM gallery2 WHERE topic_id="1138258" UNION SELECT * FROM gallery2 WHERE topic_id="1801023" UNION SELECT * FROM gallery2 WHERE topic_id="698153" UNION SELECT * FROM gallery2 WHERE topic_id="303698" UNION SELECT * FROM gallery2 WHERE topic_id="967937" UNION SELECT * FROM gallery2 WHERE topic_id="819242" UNION SELECT * FROM gallery2 WHERE topic_id="1710742" UNION SELECT * FROM gallery2 WHERE topic_id="1649777" UNION SELECT * FROM gallery2 WHERE topic_id="736981" UNION SELECT * FROM gallery2 WHERE topic_id="102173" UNION SELECT * FROM gallery2 WHERE topic_id="1352251" UNION SELECT * FROM gallery2 WHERE topic_id="214082" UNION SELECT * FROM gallery2 WHERE topic_id="378650" UNION SELECT * FROM gallery2 WHERE topic_id="24491" UNION SELECT * FROM gallery2 WHERE topic_id="1698387" UNION SELECT * FROM gallery2 WHERE topic_id="1290457"