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Code Issues 32 Releases Wiki Activity

Fixed #32388 -- Clarified QuerySet.bulk_update() caveat about duplicates for multiple batches.

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Timothy McCurrach
2021-01-27 11:25:31 +00:00
committed by Mariusz Felisiak
parent 54102d20b2
commit 241da3f06e
1 changed files with 2 additions and 1 deletions
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docs/ref/models/querysets.txt
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@@ -2241,7 +2241,8 @@ them, but it has a few caveats:
``batch_size``.
* Updating fields defined on multi-table inheritance ancestors will incur an
extra query per ancestor.
* If ``objs`` contains duplicates, only the first one is updated.
* When an individual batch contains duplicates, only the first instance in that
batch will result in an update.
The ``batch_size`` parameter controls how many objects are saved in a single
query. The default is to update all objects in one batch, except for SQLite