Re: [Django] #36352: values() raises a FieldError when multiple values() of annotated values are chained

[Django]

#36352: values() raises a FieldError when multiple values() of annotated values are
chained
-------------------------------------+-------------------------------------
Reporter: Joseph Yu | Owner: (none)
Type: Bug | Status: new
Component: Database layer | Version: 5.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: .values, distinct | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Simon Charette):

It looks like we could error out with a more appropriate message but we've
made some significant changes in since 4.2 to prevent obscuring existing
field references with annotations.

In other words I would expect calls of the form
`Mapping.objects.annotate(foo=F('foo__name'))` and
`Mapping.objects.annotate(foo_id=F('foo_id'))` to always be problematic to
some extent even when values is used as they turn follow up references to
such annotations ambiguous.

For example, what should
`annotate(foo=F('foo__name')).filter(foo__name="Bar")` resolve to or
surface as error?
--
Ticket URL: <https://code.djangoproject.com/ticket/36352#comment:10>
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[Django]

#36352: values() raises a FieldError when multiple values() of annotated values are
chained
-------------------------------------+-------------------------------------
Reporter: Joseph Yu | Owner: (none)

Type: | Status: new
Cleanup/optimization |

Component: Database layer | Version: 5.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: .values, distinct | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by Sarah Boyce):

* type: Bug => Cleanup/optimization

Comment:

Good point, happy to have a more helpful error message
--
Ticket URL: <https://code.djangoproject.com/ticket/36352#comment:11>

[Django]

#36352: values() raises a FieldError when multiple values() of annotated values are
chained
-------------------------------------+-------------------------------------
Reporter: Joseph Yu | Owner:

Type: | JaeHyuckSa
Cleanup/optimization | Status: assigned

Component: Database layer | Version: 5.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: .values, distinct | Triage Stage: Accepted

Has patch: 1 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by JaeHyuckSa):

* has_patch: 0 => 1
* owner: (none) => JaeHyuckSa
* status: new => assigned

--
Ticket URL: <https://code.djangoproject.com/ticket/36352#comment:12>

[Django]

#36352: values() raises a FieldError when multiple values() of annotated values are
chained
-------------------------------------+-------------------------------------
Reporter: Joseph Yu | Owner:
Type: | JaeHyuckSa
Cleanup/optimization | Status: assigned
Component: Database layer | Version: 5.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: .values, distinct | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 1

Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by ontowhee):

* needs_better_patch: 0 => 1

--
Ticket URL: <https://code.djangoproject.com/ticket/36352#comment:13>

[Django]

#36352: values() raises a FieldError when multiple values() of annotated values are
chained
-------------------------------------+-------------------------------------
Reporter: Joseph Yu | Owner:
Type: | JaeHyuckSa
Cleanup/optimization | Status: assigned
Component: Database layer | Version: 5.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: .values, distinct | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0

Needs tests: 0 | Patch needs improvement: 0

Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by JaeHyuckSa):

* needs_better_patch: 1 => 0

--
Ticket URL: <https://code.djangoproject.com/ticket/36352#comment:14>