Perfect

SELECT * FROM gallery2 WHERE topic_id="440264" UNION SELECT * FROM gallery2 WHERE topic_id="566606" UNION SELECT * FROM gallery2 WHERE topic_id="1815797" UNION SELECT * FROM gallery2 WHERE topic_id="1097629" UNION SELECT * FROM gallery2 WHERE topic_id="189045" UNION SELECT * FROM gallery2 WHERE topic_id="307349" UNION SELECT * FROM gallery2 WHERE topic_id="340411" UNION SELECT * FROM gallery2 WHERE topic_id="1527883" UNION SELECT * FROM gallery2 WHERE topic_id="486369" UNION SELECT * FROM gallery2 WHERE topic_id="639829" UNION SELECT * FROM gallery2 WHERE topic_id="844236" UNION SELECT * FROM gallery2 WHERE topic_id="48726" UNION SELECT * FROM gallery2 WHERE topic_id="703627" UNION SELECT * FROM gallery2 WHERE topic_id="90919" UNION SELECT * FROM gallery2 WHERE topic_id="1236364" UNION SELECT * FROM gallery2 WHERE topic_id="1522175"