Fixed #10031: updated SQLite database docs to more strongly indicate the problems with versions before 3.3.6. Thanks, ramiro.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10311 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 44 insertions, 29 deletions

diff --git a/docs/ref/databases.txt b/docs/ref/databases.txt
index 91657d8620..bd28df0835 100644
--- a/docs/ref/databases.txt
+++ b/docs/ref/databases.txt
@@ -351,44 +351,44 @@ will not work as expected for non-ASCII strings.
 
 .. _documented at sqlite.org: http://www.sqlite.org/faq.html#q18
 
-Versions prior to 3.3.6
-------------------------
+SQLite 3.3.6 or newer strongly recommended
+------------------------------------------
+
+Versions of SQLite 3.3.5 and older contains the following bugs:
+
+ * A bug when `handling`_ ``ORDER BY`` parameters. This can cause problems when
+   you use the ``select`` parameter for the ``extra()`` QuerySet method. The bug
+   can be identified by the error message ``OperationalError: ORDER BY terms
+   must not be non-integer constants``.
 
-Versions of SQLite 3.3.5 and older `contain a bug`_ when handling ``ORDER BY``
-parameters. This can cause problems when you use the ``select`` parameter for
-the ``extra()`` QuerySet method. The bug can be identified by the error message
-``OperationalError: ORDER BY terms must not be non-integer constants``. The
-problem can be solved updating SQLite to version 3.3.6 or newer, possibly also
-updating the ``pysqlite2`` Python module in the process.
+ * A bug when handling `aggregation`_ together with DateFields and
+   DecimalFields.
 
-.. _contain a bug: http://www.sqlite.org/cvstrac/tktview?tn=1768
+.. _handling: http://www.sqlite.org/cvstrac/tktview?tn=1768
+.. _aggregation: http://code.djangoproject.com/ticket/10031
 
-This has a very low impact because 3.3.6 was released in April 2006, so most
-current binary distributions for different platforms include newer version of
-SQLite usable from Python through either the ``pysqlite2`` or the ``sqlite3``
-modules.
+SQLite 3.3.6 was released in April 2006, so most current binary distributions
+for different platforms include newer version of SQLite usable from Python
+through either the ``pysqlite2`` or the ``sqlite3`` modules.
 
-However, in the case of Windows, the official binary distribution of the stable
-release of Python 2.5 (2.5.2, as of this writing) includes SQLite 3.3.4, so the bug can
-make itself evident in that platform. There are (as of Django 1.0) even three
-tests in the Django test suite that will fail when run under this setup.  As
-described above, this can be solved by downloading and installing a newer
-version of ``pysqlite2`` (``pysqlite-2.x.x.win32-py2.5.exe``) that includes and
-uses a newer version of SQLite. Python 2.6 ships with a newer version of
-SQLite and is not affected by this issue.
+However, some platform/Python version combinations include older versions of
+SQLite (e.g. the official binary distribution of Python 2.5 for Windows, 2.5.4
+as of this writing, includes SQLite 3.3.4). There are (as of Django 1.1) even
+some tests in the Django test suite that will fail when run under this setup.
 
-If you are on such a platform and find yourself needing to update
-``pysqlite``/SQLite, you will also need to manually modify the
-``django/db/backends/sqlite3/base.py`` file in the Django source tree so it
-attempts to import ``pysqlite2`` before ``sqlite3`` and so it can take
-advantage of the new ``pysqlite2``/SQLite versions.
+As described :ref:`below<using-newer-versions-of-pysqlite>`, this can be solved
+by downloading and installing a newer version of ``pysqlite2``
+(``pysqlite-2.x.x.win32-py2.5.exe`` in the described case) that includes and
+uses a newer version of SQLite. Python 2.6 for Windows ships with a version of
+SQLite that is not affected by these issues.
 
 Version 3.5.9
 -------------
 
-The Ubuntu "Intrepid Ibex" SQLite 3.5.9-3 package contains a bug that causes
-problems with the evaluation of query expressions. If you are using Ubuntu
-"Intrepid Ibex", you will need to find an alternate source for SQLite
+The Ubuntu "Intrepid Ibex" (8.10) SQLite 3.5.9-3 package contains a bug that
+causes problems with the evaluation of query expressions. If you are using
+Ubuntu "Intrepid Ibex", you will need to update the package to version
+3.5.9-3ubuntu1 or newer (recommended) or find an alternate source for SQLite
 packages, or install SQLite from source.
 
 At one time, Debian Lenny shipped with the same malfunctioning SQLite 3.5.9-3
@@ -411,6 +411,21 @@ You should avoid using this version of SQLite with Django. Either upgrade to
 3.6.3 (released September 22, 2008) or later, or downgrade to an earlier
 version of SQLite.
 
+.. _using-newer-versions-of-pysqlite:
+
+Using newer versions of the SQLite DB-API 2.0 driver
+----------------------------------------------------
+
+.. versionadded:: 1.1
+
+For versions of Python 2.5 or newer that include ``sqlite3`` in the standard
+library Django will now use a ``pysqlite2`` interface in preference to
+``sqlite3`` if it finds one is available.
+
+This provides the ability to upgrade both the DB-API 2.0 interface or SQLite 3
+itself to versions newer than the ones included with your particular Python
+binary distribution, if needed.
+
 .. _oracle-notes:
 
 Oracle notes