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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
The documentation in this tree is in plain text files and can be viewed using any text file viewer. It uses ReST (reStructuredText) [1], and the Sphinx documentation system [2]. This allows it to be built into other forms for easier viewing and browsing. To create an HTML version of the docs: * Install Sphinx (using ``sudo pip install Sphinx`` or some other method) * In this docs/ directory, type ``make html`` (or ``make.bat html`` on Windows) at a shell prompt. The documentation in _build/html/index.html can then be viewed in a web browser. [1] http://docutils.sourceforge.net/rst.html [2] http://sphinx.pocoo.org/