I should have added that I can get the same effect with this: # In this example, Meet and Team are being connected through Participant_team teamStaff = db(db.Meet.id <http://db.meet.id/> == request.args(1)).select( db.Meet.ALL, db.Team.ALL, join = [db.Participant_team.on( db.Participant_team.Meet == db.Meet.id<http://db.meet.id/> ), db.Team.on(db.Participant_team.Team == db.Team.id<http://db.team.id/> )])
On Tuesday, September 11, 2012 9:04:25 AM UTC-6, MichaelF wrote: > > Section 6.21.1 in the manual talks about an alternative syntax for 1-many > joins, using the 'on' function. Is that technique available for many-many? > I try this and get an error: > > # In this example, Meet and Team are being connected through > Participant_team > teamStaff = db(db.Meet.id == request.args(1)).select( > db.Meet.ALL, db.Team.ALL, > join = db.Team.on( > (db.Participant_team.Meet == db.Meet.id) & > (db.Participant_team.Team == db.Team.id))) > > The error is: "Unknown column 'Meet.id' in 'on clause'" > > I can change "db.Team.on" to "db.Participant_team.on", but I get the same > error. > > I have a lot of other JOINs that I must do, but this is the smallest > example that shows the problem. > --
