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Code Issues 32 Releases Wiki Activity

Fixed #20600 -- ordered distinct(*fields) in subqueries

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This commit is contained in:
Anssi Kääriäinen
2013-10-11 00:12:10 +03:00
parent ccbba98131
commit b1b04df065
3 changed files with 53 additions and 17 deletions
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16
tests/extra_regress/tests.py
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@@ -347,3 +347,19 @@ class ExtraRegressTests(TestCase):
['<TestObject: TestObject: a,a,a>', '<TestObject: TestObject: b,a,a>'],
ordered=False
)
def test_extra_values_distinct_ordering(self):
t1 = TestObject.objects.create(first='a', second='a', third='a')
t2 = TestObject.objects.create(first='a', second='b', third='b')
qs = TestObject.objects.extra(
select={'second_extra': 'second'}
).values_list('id', flat=True).distinct()
self.assertQuerysetEqual(
qs.order_by('second_extra'), [t1.pk, t2.pk], lambda x: x)
self.assertQuerysetEqual(
qs.order_by('-second_extra'), [t2.pk, t1.pk], lambda x: x)
# Note: the extra ordering must appear in select clause, so we get two
# non-distinct results here (this is on purpose, see #7070).
self.assertQuerysetEqual(
qs.order_by('-second_extra').values_list('first', flat=True),
['a', 'a'], lambda x: x)