Implementing Simultaneous-Use within SQL

[Graeme Lee]

I'm trying to implement simultaneous session usage within a PostgreSQL 
database.  The debug of radiusd shows the following on load:

sql: simul_count_query = "SELECT get_simul_sessions FROM 
get_simul_sessions('%{SQL-User-Name}')"
sql: simul_verify_query = ""

So the query is being loaded into radiusd ok.  However, it never gets 
called.

My radiusd config for sessions is as follows:
session {
#       radutmp
       #
       #  See "Simultaneous Use Checking Querie" in sql.conf
       sql
}
(and yes there's a typo in the default config file if anyone feels like 
fixing it)

the function  get_simul_sessions(<username>) returns 0 if the user is 
not over their simultaneous-use limit, and a 1 if they should not log 
on.  Whether this works or not is arbitrary, as the statement never gets 
called.

Everything else in the database is working perfectly.  What have I missed?
Thanks,
Graeme
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