#10977: In some cases, the intersection of two QuerySets is empty when it
shouldn't
be
---------------------------------------------------+------------------------
Reporter: zain | Owner:
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: 1.0
Resolution: | Keywords:
Stage: Unreviewed | Has_patch: 1
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
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Changes (by clement):
* owner: clement =>
* has_patch: 0 => 1
Comment:
The attached fix does the following in !BaseQuery.combine() :
* get the source of the join from '''alias_map[alias][LHS_ALIAS]'''
* check if there's a corresponding newly labelled alias in
'''change_map''' dict, and use it in that case
* send that source as the first element of the '''connection''' tuple to
!BaseQuery.join() (the rest of the tuple being what is in
'''rev_join_map[alias]''')
I've ran the full test suite (./runtests.py) against this patch, and it
passes, but this being my first shot at Django's internals, I don't have a
lot of insight on how large the impact of that patch might be.
--
Ticket URL: <http://code.djangoproject.com/ticket/10977#comment:3>
Django <http://code.djangoproject.com/>
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