Opened 12 years ago
Last modified 11 years ago
#19195 closed Bug
Using distinct([*fields]) filter on a foreign key produces an ordering error when the foreign key has a Meta ordering field. — at Initial Version
| Reported by: | Owned by: | nobody | |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | 1.7-beta-2 |
| Severity: | Release blocker | Keywords: | distinct, query |
| Cc: | Simon Charette | Triage Stage: | Ready for checkin |
| Has patch: | yes | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
I tried to using a distinct filter like this: Appearance.objects.order_by('team').distinct('team'); this fails with the following Database Error: "DatabaseError: SELECT DISTINCT ON expressions must match initial ORDER BY expressions"
It is possible to work around this problem by using this modified filter: Appearance.objects.order_by('teamid').distinct('teamid').
Model definition: http://pastebin.com/index/J45fy9fr
Full traceback: http://pastebin.com/feSFMbzX
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