#26368: Order of &-ing Q objects affects results in edge case
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Reporter: Floris den Hengst | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.9
(models, ORM) |
Severity: Normal | Resolution:
Keywords: Query Q order | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by Can Sarıgöl):
* cc: Can Sarıgöl (added)
Comment:
Hi, I'm working on this issue. to fix it and understand deeply. as far as
I understand:), the problem is
[https://github.com/django/django/blob/8aad3321ed6f0b603361767a4fe00d046b5fdd34/django/utils/tree.py#L113
here]. When we add a {{{combine}}} q node and this q contains
{{{negated=True}}} clauses, this {{{~Q}}}s are associated with other
{{{Q}}}. I couldn't find why but if I change the code like this:
{{{self.children.insert(0, data)}}}, I can see the query is fixed.
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Ticket URL: <https://code.djangoproject.com/ticket/26368#comment:3>
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