Opened 7 years ago
Last modified 10 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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