    def test_string_agg_delimiter_escaping(self):
        values = AggregateTestModel.objects.aggregate(stringagg=StringAgg('char_field', delimiter="'"))
        self.assertEqual(values, {'stringagg': "Foo1'Foo2'Foo4'Foo3"})
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.