Hey guys, I'm using web2py with mysql and I can't do a Inner Join
When I try:
groups = db().select(db.groups.name,db.city.name,
join=[db.groups.on(db.groups.id ==
db.lab.group_id),
db.city.on(db.city.id == db.groups.city_id),
db.auth_user.on(db.researcher.user_id ==
db.auth_user.id),
db.researcher.on(db.researcher.id ==
db.researcher_lab_permission.researcher_id),
db.lab.on(db.lab.id ==
db.researcher_lab_permission.lab_id)
])
Raise this error:
<class 'gluon.contrib.pymysql.err.InternalError'> (1054, u"Unknown column
'lab.group_id' in 'on clause'")
But when I try only:
groups = db().select(db.groups.name,db.city.name,
join=[db.groups.on(db.groups.id ==
db.lab.group_id),
db.city.on(db.city.id == db.groups.city_id)
])
It's works. There are some limit for tables join?
--
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