Opened 8 years ago
Last modified 21 months ago
#29214 new Bug
SQL-error when updating after annotating using subquery — at Initial Version
| Reported by: | Oskar Persson | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | dev |
| Severity: | Normal | Keywords: | queryset annotations |
| Cc: | Mariusz Felisiak, Simon Charette, Chetan Khanna | Triage Stage: | Accepted |
| Has patch: | yes | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | yes |
| Easy pickings: | no | UI/UX: | no |
Description
An SQL-error is raised when updating a queryset which includes an annotation created using a subquery, which in turn also uses an annotation.
class Recursive(models.Model):
name = models.CharField(max_length=10)
link = models.IntegerField()
parent = models.ForeignKey('self', models.CASCADE, null=True)
rec1 = Recursive.objects.create(name="r1", link=1)
rec2 = Recursive.objects.create(name="r2", link=1)
rec3 = Recursive.objects.create(name="r11", parent=rec1, link=2)
latest_parent = Recursive.objects.filter(link=OuterRef('parent_link')).order_by('id')
Recursive.objects.filter(parent__isnull=False) \
.annotate(parent_link=F('parent__link')) \
.annotate(p=Subquery(latest_parent.values('pk')[:1])) \
.update(parent_id=F('p'))
Traceback (most recent call last):
File "tests.py", line 88, in test_update_annotated_using_related_queryset
.update(parent_id=F('p'))
File "/git/django/django/db/models/query.py", line 647, in update
rows = query.get_compiler(self.db).execute_sql(CURSOR)
File "/git/django/django/db/models/sql/compiler.py", line 1204, in execute_sql
cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/git/django/django/db/models/sql/compiler.py", line 899, in execute_sql
raise original_exception
OperationalError: no such column: T2.link
I've tried this in SQLite and MySQL in Django 1.11.11 and Django 2.0 using Python 3.6.0. All raising similar errors.
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