$_sum_sql = "SELECT sum(countx) as up_sum FROM ((select sum(filesize) as countx from destoon_upload_0 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_1 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_2 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_3 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_5 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_5 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_6 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_7 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_8 where username = '".$username."')UNION ALL(select sum(filesize) as countx from destoon_upload_9 where username = '".$username."')) AS sun_biao";