Module « sqlalchemy »

Fonction lateral - module sqlalchemy

Signature de la fonction lateral

def lateral(selectable, name=None) 

Description

lateral.__doc__

Return a :class:`_expression.Lateral` object.

        :class:`_expression.Lateral` is an :class:`_expression.Alias`
        subclass that represents
        a subquery with the LATERAL keyword applied to it.

        The special behavior of a LATERAL subquery is that it appears in the
        FROM clause of an enclosing SELECT, but may correlate to other
        FROM clauses of that SELECT.   It is a special case of subquery
        only supported by a small number of backends, currently more recent
        PostgreSQL versions.

        .. versionadded:: 1.1

        .. seealso::

            :ref:`lateral_selects` -  overview of usage.