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Code Issues 32 Releases Wiki Activity

[1.11.x] Fixed #28199 -- Fixed Subquery generating unnecessary/invalid CAST.

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Thanks Simon Charette for the fix.

Backport of f04495521a from master
This commit is contained in:
Tim Graham
2017-05-30 06:40:41 -04:00
parent 3e17b0222c
commit 9b9a81024a
4 changed files with 18 additions and 3 deletions
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9
tests/expressions/tests.py
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@@ -25,7 +25,8 @@ from django.test.utils import Approximate
from django.utils import six
from .models import (
UUID, Company, Employee, Experiment, Number, Result, SimulationRun, Time,
UUID, UUIDPK, Company, Employee, Experiment, Number, Result, SimulationRun,
Time,
)
@@ -480,6 +481,12 @@ class BasicExpressionsTests(TestCase):
subquery_test2 = Company.objects.filter(pk=Subquery(small_companies.filter(num_employees=3)))
self.assertCountEqual(subquery_test2, [self.foobar_ltd])
def test_uuid_pk_subquery(self):
u = UUIDPK.objects.create()
UUID.objects.create(uuid_fk=u)
qs = UUIDPK.objects.filter(id__in=Subquery(UUID.objects.values('uuid_fk__id')))
self.assertCountEqual(qs, [u])
def test_nested_subquery(self):
inner = Company.objects.filter(point_of_contact=OuterRef('pk'))
outer = Employee.objects.annotate(is_point_of_contact=Exists(inner))