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Fixed #30120 -- Fixed invalid SQL in distinct aggregate. 

Regression in bc05547cd8 (refs #28658).
This commit is contained in:
Simon Charette 2019-01-21 08:24:32 -06:00 committed by Tim Graham
parent 838e432e3e
commit 65858119d2
2 changed files with 8 additions and 1 deletions
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7
tests/aggregation/tests.py
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@ -8,6 +8,7 @@ from django.db.models import (
Avg, Count, DecimalField, DurationField, F, FloatField, Func, IntegerField,
Max, Min, Sum, Value,
)
from django.db.models.expressions import Case, When
from django.test import TestCase
from django.test.utils import Approximate, CaptureQueriesContext
from django.utils import timezone
@ -395,6 +396,12 @@ class AggregateTestCase(TestCase):
sql = ctx.captured_queries[0]['sql']
self.assertIn('SELECT COUNT(*) ', sql)
def test_count_distinct_expression(self):
aggs = Book.objects.aggregate(
distinct_ratings=Count(Case(When(pages__gt=300, then='rating')), distinct=True),
)
self.assertEqual(aggs['distinct_ratings'], 4)
def test_non_grouped_annotation_not_in_group_by(self):
"""
An annotation not included in values() before an aggregate should be