#25991: A new implementation for exclude() queries
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Reporter: akaariai | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: master
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: Accepted | Has patch: 1
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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The idea is to prewalk the Q-object, split it into parts that need to go
into a subquery, and then add the filtered subqueries into the main query.
This ticket deals with problems of doing
`Author.objects.exclude(friends__age__gte=20, friends__age__lte=40)`.
Currently this creates two joins to friends, so that any author with
either a friend older than 20 or a friend younger than 40 is matched. The
correct interpretation is that any author with a friend with age between
20 and 40 is matched.
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Ticket URL: <https://code.djangoproject.com/ticket/25991>
Django <https://code.djangoproject.com/>
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