Getting more info on radpostauth

Hi Alan and dear list. Currently I use freeradius 3 to authenticate wifi users using SQL module. After each authentication request I can see a new entry on radpostauth table in my database.... Everything OK. Radpostauth table has the information about username, pass, reply message and authdate. I need a record about the callingstationid parameter that is arriving in each request. So, If I create a new row in that table, how can I modify the SQL query in order to insert the callingstationid in that table? Thanks a lot -- *C. Andrés Gómez R.*