#23646: Add QuerySet.bulk_update() to to efficiently update many models
-------------------------------------+-------------------------------------
Reporter: Brillgen Developers | Owner: Tom
| Forbes
Type: New feature | Status: closed
Component: Database layer | Version: 1.9
(models, ORM) |
Severity: Normal | Resolution: fixed
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Mariusz Felisiak <felisiak.mariusz@…>):
In [changeset:"d35ce682e31ea4a86c2079c60721fae171f03d7c" d35ce682]:
{{{
#!CommitTicketReference repository=""
revision="d35ce682e31ea4a86c2079c60721fae171f03d7c"
Fixed #33506 -- Made QuerySet.bulk_update() perform atomic writes against
write database.
The lack of _for_write = True assignment in bulk_update prior to
accessing self.db resulted in the db_for_read database being used to
wrap batched UPDATEs in a transaction.
Also tweaked the batch queryset creation to also ensure they are
executed against the same database as the opened transaction under all
circumstances.
Refs #23646, #33501.
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/23646#comment:18>
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