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Code Issues 32 Releases Wiki Activity

Fixed #24959 -- Fixed queries using negative timedeltas on MySQL and Oracle.

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This commit is contained in:
Mariusz Felisiak
2016-11-23 15:10:47 +01:00
committed by Tim Graham
parent 2742901ac2
commit b63d0c54b0
3 changed files with 23 additions and 11 deletions
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20
tests/expressions/tests.py
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@@ -1043,6 +1043,26 @@ class FTimeDeltaTests(TestCase):
).order_by('name')
self.assertQuerysetEqual(over_estimate, ['e3', 'e4'], lambda e: e.name)
def test_negative_timedelta_update(self):
# subtract 30 seconds, 30 minutes, 2 hours and 2 days
experiments = Experiment.objects.filter(name='e0').annotate(
start_sub_seconds=F('start') + datetime.timedelta(seconds=-30),
).annotate(
start_sub_minutes=F('start_sub_seconds') + datetime.timedelta(minutes=-30),
).annotate(
start_sub_hours=F('start_sub_minutes') + datetime.timedelta(hours=-2),
).annotate(
new_start=F('start_sub_hours') + datetime.timedelta(days=-2),
)
expected_start = datetime.datetime(2010, 6, 23, 9, 45, 0)
if connection.features.supports_microsecond_precision:
# subtract 30 microseconds
experiments = experiments.annotate(new_start=F('new_start') + datetime.timedelta(microseconds=-30))
expected_start += datetime.timedelta(microseconds=+746970)
experiments.update(start=F('new_start'))
e0 = Experiment.objects.get(name='e0')
self.assertEqual(e0.start, expected_start)
class ValueTests(TestCase):
def test_update_TimeField_using_Value(self):