def is_distinct(self):
    raise NotImplementedError
Tests the where clause creation
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/db/__init__.py/_BaseQuery.is_distinct--crossover with--dataset/ETHPy150Open datastax/python-driver/tests/integration/cqlengine/query/test_named.py/TestQuerySetOperation.test_filter_method_where_clause_generation