def combine_expression(self, connector, sub_expressions):
    'Combine a list of subexpressions into a single expression, using\n        the provided connecting operator. This is required because operators\n        can vary between backends (e.g., Oracle with %% and &) and between\n        subexpression types (e.g., date expressions)\n        '
    conn = (' %s ' % connector)
    return conn.join(sub_expressions)
Combine a list of subexpressions into a single expression, using
the provided connecting operator. This is required because operators
can vary between backends (e.g., Oracle with %% and &) and between
subexpression types (e.g., date expressions)
def combine_expression(self, connector, sub_expressions):
    'Combine a list of subexpressions into a single expression, using\n        the provided connecting operator. This is required because operators\n        can vary between backends (e.g., Oracle with %% and &) and between\n        subexpression types (e.g., date expressions)\n        '
    conn = (' %s ' % connector)
    return conn.join(sub_expressions)