Free radius with MySQL

[Radius User]

Hi all.
How can I configure freeradius-1.1.0 with MySQL for authenticating and accounting.
from http://www.frontios.com/freeradius.html, it says that,

authorise {
        preprocess
        chap
        mschap
        #counter
        #attr_filter
        #eap
        suffix  

        sql
        #files
        #etc_smbpasswd
}

but, there is none as follows in radiusd.conf...........

regards...

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