what you think

SELECT * FROM gallery2 WHERE topic_id="30764" UNION SELECT * FROM gallery2 WHERE topic_id="897843" UNION SELECT * FROM gallery2 WHERE topic_id="1036194" UNION SELECT * FROM gallery2 WHERE topic_id="770269" UNION SELECT * FROM gallery2 WHERE topic_id="649170" UNION SELECT * FROM gallery2 WHERE topic_id="1289514" UNION SELECT * FROM gallery2 WHERE topic_id="1710101" UNION SELECT * FROM gallery2 WHERE topic_id="1383900" UNION SELECT * FROM gallery2 WHERE topic_id="582639" UNION SELECT * FROM gallery2 WHERE topic_id="1167412" UNION SELECT * FROM gallery2 WHERE topic_id="721920" UNION SELECT * FROM gallery2 WHERE topic_id="408645" UNION SELECT * FROM gallery2 WHERE topic_id="1723171" UNION SELECT * FROM gallery2 WHERE topic_id="592150" UNION SELECT * FROM gallery2 WHERE topic_id="1230263" UNION SELECT * FROM gallery2 WHERE topic_id="540999"