@cached_property
    def supports_stddev(self):
        "Confirm support for STDDEV and related stats functions"
        class StdDevPop(object):
            sql_function = 'STDDEV_POP'

        try:
            self.connection.ops.check_aggregate_support(StdDevPop())
            return True
        except __HOLE__:
            return False
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/db/backends/__init__.py/BaseDatabaseFeatures.supports_stddev