#28863: Regression in 2.0: an annotated then filtered db function using a Q
object
crashes
-------------------------------------+-------------------------------------
Reporter: Adam (Chainz) | Owner: Sergey
Johnson | Fedoseev
Type: Bug | Status: assigned
Component: Database layer | Version: 2.0
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Tim Graham):
* cc: Josh Smeaton (added)
Comment:
I'm not sure. I noticed that #27021 says that something like
`Model.objects.annotate(boolfield=ExpressionWrapper(Q(field__gte=4),
output_field=BooleanField()))` has emerged as a common pattern but is
discouraged. The current PR generates invalid SQL on Oracle.
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Ticket URL: <https://code.djangoproject.com/ticket/28863#comment:13>
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