In the last episode (Jul 07), Marcel Grandemange said: > I hope someone can assist me. I have a freeradius server running off > mysql. Now I would like to use triggers to negate some of the traffic > logged within it. I tried to use following as trigger.. > > Create Trigger ftp > BEFORE UPDATE ON radacct > FOR EACH ROW > BEGIN > UPDATE radacct SET NEW.AcctInputOctets=(0 - NEW.AcctInputOctets) WHERE > NASPortId=21; > UPDATE radacct SET NEW.AcctOutputOctets=(0 - NEW.AcctOutputOctets) WHERE > NASPortId=21; > END; > > And Many variants of that but only ends up locking the db in someway with > messages such as. > > Tue Jul 7 23:34:12 2009 : Error: rlm_sql_mysql: Cannot store result > Tue Jul 7 23:34:12 2009 : Error: rlm_sql_mysql: MySQL error 'Can't update > table 'radacct' in stored function/trigger because it is already used by > statement which invoked this stored function/trigger.'
You don't want to UPDATE the table, since as you have seen it will cause an error. The only row you can change in the table being modified in a trigger is the active row itself, and you must change its values by SETting NEW.fieldname: IF NEW.NASPortID = 21 THEN SET NEW.AcctInputOctets=(0 - NEW.AcctInputOctets); SET NEW.AcctOutputOctets=(0 - NEW.AcctOutputOctets): END IF; -- Dan Nelson dnel...@allantgroup.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org