Classe « Query »

Méthode sqlalchemy.orm.Query.having

Signature de la méthode having

def having(self, criterion) 

Description

having.__doc__

Apply a HAVING criterion to the query and return the
        newly resulting :class:`_query.Query`.

        :meth:`_query.Query.having` is used in conjunction with
        :meth:`_query.Query.group_by`.

        HAVING criterion makes it possible to use filters on aggregate
        functions like COUNT, SUM, AVG, MAX, and MIN, eg.::

            q = session.query(User.id).\
                        join(User.addresses).\
                        group_by(User.id).\
                        having(func.count(Address.id) > 2)