Classe « Query »

Méthode sqlalchemy.orm.Query.delete

Signature de la méthode delete

def delete(self, synchronize_session='evaluate') 

Description

delete.__doc__

Perform a DELETE with an arbitrary WHERE clause.

        Deletes rows matched by this query from the database.

        E.g.::

            sess.query(User).filter(User.age == 25).\
                delete(synchronize_session=False)

            sess.query(User).filter(User.age == 25).\
                delete(synchronize_session='evaluate')

        .. warning::

            See the section :ref:`orm_expression_update_delete` for important
            caveats and warnings, including limitations when using bulk UPDATE
            and DELETE with mapper inheritance configurations.

        :param synchronize_session: chooses the strategy to update the
         attributes on objects in the session.   See the section
         :ref:`orm_expression_update_delete` for a discussion of these
         strategies.

        :return: the count of rows matched as returned by the database's
          "row count" feature.

        .. seealso::

            :ref:`orm_expression_update_delete`