@property
    def on_update_cascade(self):

        return exclusions.open()
we require the we have a dtype compat for the values
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/testing/requirements.py/SuiteRequirements.on_update_cascade--crossover with--dataset/ETHPy150Open pydata/pandas/pandas/tseries/index.py/DatetimeIndex._simple_new