Method get_group_by_cols

django/db/models/expressions.py:1509–1513

(self)

        return self.as_sql(compiler, connection, **extra_context)

    def get_group_by_cols(self):
        group_by_cols = []
        for expr in self.get_source_expressions():
            group_by_cols.extend(expr.get_group_by_cols())
        return group_by_cols


class OrderByList(ExpressionList):