postauth sql logging

Hi all, I have just recently migrated from 1.1.7 to 2.0.5. In 1.1.7 I had the postauth sql logging turned on to log successful and failed auth attempts. I not able to find where I would add it in 2.0.5 to enable this feature. I see the sql statement in the dialup.conf config file but I am unsure on how to invoke the sql query. Any pointers would be great. Thanks, Jeff.