[sqlmap-users] How sqlmap fetching the current-db and current-user?

[Kaiyi Z. <zky...@gm...>]

Hi, everyone
I use sqlmap -u "http://x.x.x.x/testenv/mysql/get_int.php?id=1" -f -b
--current-user -v 5  Actully the sql is select * from user where
id=$_Get['id'] limit 0,1
Befor I exec this, i rm the sqlmap output directory and open the mysql
general_log. I view the sqlmap debug message and mysql.log, there  only
payloads like "?id=1 xxx" , i think sqlmap fetching the current-db and
current-user using error message, but in this example, there should use one
payload like "?id=*-1* xxx", Is there somebody explain for me ,Why?

Thanks.