Module « sqlalchemy »

Fonction tuple_ - module sqlalchemy

Signature de la fonction tuple_

def tuple_(*clauses, **kw) 

Description

tuple_.__doc__

Return a :class:`.Tuple`.

        Main usage is to produce a composite IN construct using
        :meth:`.ColumnOperators.in_` ::

            from sqlalchemy import tuple_

            tuple_(table.c.col1, table.c.col2).in_(
                [(1, 2), (5, 12), (10, 19)]
            )

        .. versionchanged:: 1.3.6 Added support for SQLite IN tuples.

        .. warning::

            The composite IN construct is not supported by all backends, and is
            currently known to work on PostgreSQL, MySQL, and SQLite.
            Unsupported backends will raise a subclass of
            :class:`~sqlalchemy.exc.DBAPIError` when such an expression is
            invoked.