In a pro*C program, I use query follow:
INSERT INTO radacct_wk
SELECT (select psid from cscterminfo where cscterminfo.TELNO = username), nasipaddress, acctstarttime, acctstoptime,
acctsessiontime, acctinputoctets, acctoutputoctets, acctterminatecause, framedipaddress
FROM radacct@DBSV_B;

But sql error appear :
SELECT (select psid from cscterminfo where cscterminfo.TELNO = username), understand this command.
Please help me!