Document that only the base queryset’s prefetch_related() is preserved when using union()
When using QuerySet.union() (possibly also intersection() and difference()) in Django, any prefetch_related() applied to the second (and third, etc) queryset is silently ignored. See forum thread in which it was suggested to open a documentation ticket. A docs improvement should also likely include the workaround for using Q objects to do all prefetches in the base qs (where possible), which is suggested by Simon in the forum.
Change History
(4)
| Description: |
modified (diff)
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| Component: |
Documentation → Database layer (models, ORM)
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| Triage Stage: |
Unreviewed → Accepted
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| Owner: |
set to Clifford Gama
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| Status: |
new → assigned
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Makes sense, thank you Clifford!