#35399: Reduce the "Case-When" sequence for a bulk_update when the values for a
certain field are the same.
-------------------------------------+-------------------------------------
Reporter: Willem Van Onsem | Owner: nobody
Type: New feature | Status: closed
Component: Database layer | Version: 5.0
(models, ORM) |
Severity: Normal | Resolution: duplicate
Keywords: db, bulk_update, | Triage Stage:
case, when | Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Simon Charette):
* resolution: => duplicate
* status: new => closed
Comment:
This was discussed in #35124 recently and at lead to
[https://forum.djangoproject.com/t/could-bulk-update-aggregate-the-pks-in-
when-clauses/27093/2 this discussion] about the complexity of and cost of
hashing certain values quickly. Unless you can provide benchmarks that
this is actually faster I think time is better invested towards #29771 and
#31202.
--
Ticket URL: <https://code.djangoproject.com/ticket/35399#comment:1>
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