Module « sqlalchemy »

Fonction between - module sqlalchemy

Signature de la fonction between

def between(expr, lower_bound, upper_bound, symmetric=False) 

Description

between.__doc__

Produce a ``BETWEEN`` predicate clause.

    E.g.::

        from sqlalchemy import between
        stmt = select(users_table).where(between(users_table.c.id, 5, 7))

    Would produce SQL resembling::

        SELECT id, name FROM user WHERE id BETWEEN :id_1 AND :id_2

    The :func:`.between` function is a standalone version of the
    :meth:`_expression.ColumnElement.between` method available on all
    SQL expressions, as in::

        stmt = select(users_table).where(users_table.c.id.between(5, 7))

    All arguments passed to :func:`.between`, including the left side
    column expression, are coerced from Python scalar values if a
    the value is not a :class:`_expression.ColumnElement` subclass.
    For example,
    three fixed values can be compared as in::

        print(between(5, 3, 7))

    Which would produce::

        :param_1 BETWEEN :param_2 AND :param_3

    :param expr: a column expression, typically a
     :class:`_expression.ColumnElement`
     instance or alternatively a Python scalar expression to be coerced
     into a column expression, serving as the left side of the ``BETWEEN``
     expression.

    :param lower_bound: a column or Python scalar expression serving as the
     lower bound of the right side of the ``BETWEEN`` expression.

    :param upper_bound: a column or Python scalar expression serving as the
     upper bound of the right side of the ``BETWEEN`` expression.

    :param symmetric: if True, will render " BETWEEN SYMMETRIC ". Note
     that not all databases support this syntax.

     .. versionadded:: 0.9.5

    .. seealso::

        :meth:`_expression.ColumnElement.between`