simple

SELECT * FROM gallery2 WHERE topic_id="119623" UNION SELECT * FROM gallery2 WHERE topic_id="140358" UNION SELECT * FROM gallery2 WHERE topic_id="1813540" UNION SELECT * FROM gallery2 WHERE topic_id="331895" UNION SELECT * FROM gallery2 WHERE topic_id="483216" UNION SELECT * FROM gallery2 WHERE topic_id="350967" UNION SELECT * FROM gallery2 WHERE topic_id="1746511" UNION SELECT * FROM gallery2 WHERE topic_id="564861" UNION SELECT * FROM gallery2 WHERE topic_id="1015725" UNION SELECT * FROM gallery2 WHERE topic_id="367650" UNION SELECT * FROM gallery2 WHERE topic_id="502227" UNION SELECT * FROM gallery2 WHERE topic_id="867489" UNION SELECT * FROM gallery2 WHERE topic_id="791414" UNION SELECT * FROM gallery2 WHERE topic_id="1392253" UNION SELECT * FROM gallery2 WHERE topic_id="1804376" UNION SELECT * FROM gallery2 WHERE topic_id="1249762"