Module « sqlalchemy »

Fonction desc - module sqlalchemy

Signature de la fonction desc

def desc(column) 

Description

desc.__doc__

Produce a descending ``ORDER BY`` clause element.

        e.g.::

            from sqlalchemy import desc

            stmt = select(users_table).order_by(desc(users_table.c.name))

        will produce SQL as::

            SELECT id, name FROM user ORDER BY name DESC

        The :func:`.desc` function is a standalone version of the
        :meth:`_expression.ColumnElement.desc`
        method available on all SQL expressions,
        e.g.::


            stmt = select(users_table).order_by(users_table.c.name.desc())

        :param column: A :class:`_expression.ColumnElement` (e.g.
         scalar SQL expression)
         with which to apply the :func:`.desc` operation.

        .. seealso::

            :func:`.asc`

            :func:`.nulls_first`

            :func:`.nulls_last`

            :meth:`_expression.Select.order_by`