Hi All 

I am create stored persedure in postgresql database named "findout_cuncurrent_session_for_a_user_result" that return "Deny" or "Permit" .

I need to call this persidure in session section but it not working i check all policy that be explaned in unlang  man page but this cod is not working :

session {

if ("{%sql:select findout_cuncurrent_session_for_a_user_result ('%{User-Name}','%{NAS-IP-Address}','%{Called-Station-Id}','%{Calling-Station-Id}')}" == "Deny") {

update control {

Pool-Name := "Exceeded-Concurrent-Session"

}

}

}

What is the problem? Do i write sql query  write ? (this query is work fine in sql.conf )