#28797: Sum aggregation might return "-0.00" instead of "0.00"
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Reporter: Simon Hanna | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.11
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by camillo):
I cannot reproduce this. I wrote following test in tests/aggregation and
it passed. Can you check, if it also pass on your machine?
{{{
#!div style="font-size: 80%"
Code highlighting:
{{{#!python
def test_sum_to_zero(self):
for price in [29.63, -30.0, 155.5, -156.45, -0.08, 400.0, -400.0,
440.0, -463.98, -10.0, -700.0, 735.0,
-14.83, -150.0, 0.08, -9.5, -2.34, -62.82, -500.0,
735.0, -300.0, -500.0, 490.0, -170.6,
-10.0, -300.0, -0.11, 735.0, 300.0, -239.5]:
Book.objects.create(
isbn='1', name='sum_zero',
pages=1, rating=4.0, price=price, contact=self.a8,
publisher=self.p3,
pubdate=datetime.date(1995, 1, 15))
price =
Book.objects.filter(name='sum_zero').aggregate(Sum('price'))['price__sum']
self.assertEqual(0.0, price)
}}}
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/28797#comment:4>
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