Hi Folks. I'm setting up FreeRADIUS with Postgres for accounting and there's one thing i can't seem to figure out. When a Start record gets written to radacct table, AcctStopTime is not being set to anything. The field is empty. Since AcctStopTime is of type "timestamp with time zone" it does not seem to equal to NULL or '0' or anything at all. radius=# select * from radacct where acctstoptime = NULL; radacctid | acctsessionid | acctuniqueid | username | realm | nasipaddress | nasportid | nasporttype | acctstarttime | acctstoptime | acctsessiontime | acctauthentic | connectinfo_start | connectinfo_stop | acctinputoctets | acctoutputoctets | calledstationid | callingstationid | acctterminatecause | servicetype | framedprotocol | framedipaddress | acctstartdelay | acctstopdelay -----------+---------------+--------------+----------+-------+--------------+-----------+-------------+---------------+--------------+-----------------+---------------+-------------------+------------------+-----------------+------------------+-----------------+------------------+--------------------+-------------+----------------+-----------------+----------------+--------------- (0 rows) radius=# select * from radacct where acctstoptime = 0; radacctid | acctsessionid | acctuniqueid | username | realm | nasipaddress | nasportid | nasporttype | acctstarttime | acctstoptime | acctsessiontime | acctauthentic | connectinfo_start | connectinfo_stop | acctinputoctets | acctoutputoctets | calledstationid | callingstationid | acctterminatecause | servicetype | framedprotocol | framedipaddress | acctstartdelay | acctstopdelay -----------+---------------+--------------+----------+-------+--------------+-----------+-------------+---------------+--------------+-----------------+---------------+-------------------+------------------+-----------------+------------------+-----------------+------------------+--------------------+-------------+----------------+-----------------+----------------+--------------- (0 rows) How do you buidl a query to fetch a list of sessions without AcctStopTime (sessions in progress for example) ? This is on PgSQL 8.1.0. Thanx Paul