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| author | Timothy McCurrach <tim.mccurrach@gmail.com> | 2021-01-27 11:25:31 +0000 |
|---|---|---|
| committer | Mariusz Felisiak <felisiak.mariusz@gmail.com> | 2021-01-28 08:07:14 +0100 |
| commit | e95a60bb64b2c78f025a44972e7d646fa8c85b2b (patch) | |
| tree | d84f84d3144951523398f9b74df766061482e52c | |
| parent | ba71cf38ea82e8d81f6e1086d102294e0e5cc7e9 (diff) | |
[3.2.x] Fixed #32388 -- Clarified QuerySet.bulk_update() caveat about duplicates for multiple batches.
Backport of 241da3f06ee0c6f436341cda5890b221ac453e3b from master
| -rw-r--r-- | docs/ref/models/querysets.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/docs/ref/models/querysets.txt b/docs/ref/models/querysets.txt index 656bf537ad..46766da388 100644 --- a/docs/ref/models/querysets.txt +++ b/docs/ref/models/querysets.txt @@ -2249,7 +2249,8 @@ 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 |