#25367: Allow expressions in .filter() calls
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Reporter: Anssi Kääriäinen | Owner: Matthew
Type: | Schinckel
Cleanup/optimization | Status: assigned
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
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Comment (by Mariusz Felisiak <felisiak.mariusz@…>):
In [changeset:"efa1908f662c19038a944129c81462485c4a9fe8" efa1908f]:
{{{
#!CommitTicketReference repository=""
revision="efa1908f662c19038a944129c81462485c4a9fe8"
Refs #25367 -- Moved Oracle Exists() handling to contextual methods.
Oracle requires the EXISTS expression to be wrapped in a CASE WHEN in
the following cases.
1. When part of a SELECT clause.
2. When part of a ORDER BY clause.
3. When compared against another expression in the WHERE clause.
This commit moves the systematic CASE WHEN wrapping of Exists.as_oracle
to contextual .select_format, Lookup.as_oracle, and OrderBy.as_oracle
methods in order to avoid unnecessary wrapping.
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/25367#comment:12>
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