Tight

SELECT * FROM gallery2 WHERE topic_id="1520317" UNION SELECT * FROM gallery2 WHERE topic_id="1793790" UNION SELECT * FROM gallery2 WHERE topic_id="1209465" UNION SELECT * FROM gallery2 WHERE topic_id="385525" UNION SELECT * FROM gallery2 WHERE topic_id="1428271" UNION SELECT * FROM gallery2 WHERE topic_id="304336" UNION SELECT * FROM gallery2 WHERE topic_id="261105" UNION SELECT * FROM gallery2 WHERE topic_id="778080" UNION SELECT * FROM gallery2 WHERE topic_id="281841" UNION SELECT * FROM gallery2 WHERE topic_id="364010" UNION SELECT * FROM gallery2 WHERE topic_id="233831" UNION SELECT * FROM gallery2 WHERE topic_id="474034" UNION SELECT * FROM gallery2 WHERE topic_id="230220" UNION SELECT * FROM gallery2 WHERE topic_id="1687233" UNION SELECT * FROM gallery2 WHERE topic_id="659193" UNION SELECT * FROM gallery2 WHERE topic_id="1628005"