Added release notes for 4b31a6a9.

Thanks Florian for reporting this omission.
This commit is contained in:
Aymeric Augustin 2013-03-24 13:08:29 +01:00
parent f5dbb566ee
commit ae417dd4d5
2 changed files with 26 additions and 1 deletions

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@ -66,6 +66,12 @@ UTC. This limitation was lifted in Django 1.6. Use :meth:`QuerySet.datetimes()
<django.db.models.query.QuerySet.datetimes>` to perform time zone aware
aggregation on a :class:`~django.db.models.DateTimeField`.
Support for savepoints in SQLite
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Django 1.6 adds support for savepoints in SQLite, with some :ref:`limitations
<savepoints-in-sqlite>`.
``BinaryField`` model field
~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -189,12 +195,29 @@ Backwards incompatible changes in 1.6
New transaction management model
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Behavior changes
^^^^^^^^^^^^^^^^
Database-level autocommit is enabled by default in Django 1.6. While this
doesn't change the general spirit of Django's transaction management, there
are a few known backwards-incompatibities, described in the :ref:`transaction
management docs <transactions-upgrading-from-1.5>`. You should review your
code to determine if you're affected.
Savepoints and ``assertNumQueries``
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The changes in transaction management may result in additional statements to
create, release or rollback savepoints. This is more likely to happen with
SQLite, since it didn't support savepoints until this release.
If tests using :meth:`~django.test.TestCase.assertNumQueries` fail because of
a higher number of queries than expected, check that the extra queries are
related to savepoints, and adjust the expected number of queries accordingly.
Autocommit option for PostgreSQL
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
In previous versions, database-level autocommit was only an option for
PostgreSQL, and it was disabled by default. This option is now :ref:`ignored
<postgresql-autocommit-mode>` and can be removed.

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@ -372,11 +372,13 @@ The following example demonstrates the use of savepoints::
Database-specific notes
=======================
.. _savepoints-in-sqlite:
Savepoints in SQLite
--------------------
While SQLite ≥ 3.6.8 supports savepoints, a flaw in the design of the
:mod:`sqlite3` makes them hardly usable.
:mod:`sqlite3` module makes them hardly usable.
When autocommit is enabled, savepoints don't make sense. When it's disabled,
:mod:`sqlite3` commits implicitly before savepoint statements. (In fact, it