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Fixed #18247 -- Added cast to NUMERIC for Decimals on sqlite

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On sqlite the SUM() of a decimal column doesn't have a NUMERIC type so
when comparing it to a string literal (which a Decimal gets converted to
in Django) it is not compared as expected.
This commit is contained in:
Michael Tänzer 2015-06-07 02:05:36 +02:00 • committed by Tim Graham
parent b64c0d4d61
commit 3bbaf84d65
2 changed files with 23 additions and 0 deletions
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14
tests/aggregation_regress/tests.py
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@ -349,6 +349,20 @@ class AggregationTests(TestCase):
{'c__max': 3}
)
def test_decimal_aggregate_annotation_filter(self):
"""
Filtering on an aggregate annotation with Decimal values should work.
Requires special handling on SQLite (#18247).
"""
self.assertEqual(
len(Author.objects.annotate(sum=Sum('book_contact_set__price')).filter(sum__gt=Decimal(40))),
1
)
self.assertEqual(
len(Author.objects.annotate(sum=Sum('book_contact_set__price')).filter(sum__lte=Decimal(40))),
4
)
def test_field_error(self):
# Bad field requests in aggregates are caught and reported
self.assertRaises(