Enjoy

SELECT * FROM gallery2 WHERE topic_id="464849" UNION SELECT * FROM gallery2 WHERE topic_id="23136" UNION SELECT * FROM gallery2 WHERE topic_id="231262" UNION SELECT * FROM gallery2 WHERE topic_id="871361" UNION SELECT * FROM gallery2 WHERE topic_id="311877" UNION SELECT * FROM gallery2 WHERE topic_id="1295797" UNION SELECT * FROM gallery2 WHERE topic_id="1410593" UNION SELECT * FROM gallery2 WHERE topic_id="1021044" UNION SELECT * FROM gallery2 WHERE topic_id="1803878" UNION SELECT * FROM gallery2 WHERE topic_id="678685" UNION SELECT * FROM gallery2 WHERE topic_id="1661285" UNION SELECT * FROM gallery2 WHERE topic_id="760707" UNION SELECT * FROM gallery2 WHERE topic_id="739212" UNION SELECT * FROM gallery2 WHERE topic_id="1340001" UNION SELECT * FROM gallery2 WHERE topic_id="393784" UNION SELECT * FROM gallery2 WHERE topic_id="1770942"