def as_sql(self, quote_func=None):
        if not quote_func:
            quote_func = lambda x: x
        if isinstance(self.col, (list, tuple)):
            col = '%s.%s' % tuple([quote_func(c) for c in self.col])
        else:
            col = self.col
        return self.date_sql_func(self.lookup_type, col)
dataset/ETHPy150Open dcramer/django-compositepks/django/db/models/sql/datastructures.py/Date.as_sql/original