#28781: Order of queryset.union() with queryset.values() is incorrect
-------------------------------------+-------------------------------------
Reporter: Amir | Owner: nobody
Aziiev |
Type: Bug | Status: new
Component: Database | Version: 1.11
layer (models, ORM) |
Severity: Normal | Keywords: union, values
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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For example:
{{{
from django.db import models
class Mymodel(models.Model):
col1 = models.CharField(max_length=11)
col2 = models.CharField(max_length=22)
col3 = models.CharField(max_length=33)
qs = MyModel.objects.union(MyModel.objects.all(), all=True).values('col2',
'col3', 'col1', 'id').order_by('col1')
print(qs.query)
# Expected SQL
"""
(SELECT "mymodel"."id", "mymodel"."col1", "mymodel"."col2",
"mymodel"."col3" FROM "mymodel")
UNION ALL
(SELECT"mymodel"." id", "mymodel"."col1", "mymodel"."col2",
"mymodel"."col3" FROM "mymodel")
ORDER BY (3);
------------^
"""
# Must be SQL
"""
(SELECT "mymodel"."id", "mymodel"."col1", "mymodel"."col2",
"mymodel"."col3" FROM "mymodel")
UNION ALL
(SELECT"mymodel"." id", "mymodel"."col1", "mymodel"."col2",
"mymodel"."col3" FROM "mymodel")
ORDER BY (2);
------------^
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/28781>
Django <https://code.djangoproject.com/>
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