Opened 2 years ago
Closed 2 years ago
#33698 closed New feature (wontfix)
QuerySet == operator is not implemented.
| Reported by: | Mohammad Ali Mehdizadeh | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | 4.0 |
| Severity: | Normal | Keywords: | |
| Cc: | Triage Stage: | Unreviewed | |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
I have a QuerySet like below
qs1 = Model.objects.all() qs2 = qs1.all() qs1 == qs2 output: False
as we know these two QuerySet return the same results.
Change History (1)
comment:1 by , 2 years ago
| Resolution: | → wontfix |
|---|---|
| Status: | new → closed |
| Summary: | QuerySet == operator is not implemented → QuerySet == operator is not implemented. |
| Type: | Bug → New feature |
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Thanks for this ticket, however as far as I'm aware it's not feasible to compare two queryset in a performant way (see also Adam's comment). This should take into account all advanced options (e.g. used expressions, prefetching, chosen fields, etc.) and be preceded by an implementation of
==operator for theQueryclass which is even more complicated. Comparing the results is not an option because two completely different queryset can return the same results.IMO it's not worth the maintenance burden. You can always implement your own hook if comparing results suits you.