76e38a2177
The option can be used to force pre 1.6 style SELECT on save behaviour. This is needed in case the database returns zero updated rows even if there is a matching row in the DB. One such case is PostgreSQL update trigger that returns NULL. Reviewed by Tim Graham. Refs #16649 Backport of e973ee6a9879969b8ae05bb7ff681172cc5386a5 from master Conflicts: django/db/models/options.py tests/basic/tests.py
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