Fixed #16255 -- Raised minimum PostgreSQL version supported to 8.2.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@16423 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Ramiro Morales
parent
b2f5efc6ac
commit
b870bf6b9a
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@ -141,20 +141,11 @@ class DatabaseWrapper(BaseDatabaseWrapper):
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cursor.execute("SET TIME ZONE %s", [settings_dict['TIME_ZONE']])
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if not hasattr(self, '_version'):
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self.__class__._version = get_version(cursor)
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if self._version[0:2] < (8, 0):
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# No savepoint support for earlier version of PostgreSQL.
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self.features.uses_savepoints = False
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if self.features.uses_autocommit:
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if self._version[0:2] < (8, 2):
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# FIXME: Needs extra code to do reliable model insert
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# handling, so we forbid it for now.
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from django.core.exceptions import ImproperlyConfigured
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raise ImproperlyConfigured("You cannot use autocommit=True with PostgreSQL prior to 8.2 at the moment.")
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else:
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# FIXME: Eventually we're enable this by default for
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# versions that support it, but, right now, that's hard to
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# do without breaking other things (#10509).
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self.features.can_return_id_from_insert = True
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# FIXME: Eventually we'll enable this by default for
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# versions that support it, but, right now, that's hard to
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# do without breaking other things (#10509).
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self.features.can_return_id_from_insert = True
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return CursorWrapper(cursor)
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def _enter_transaction_management(self, managed):
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@ -84,23 +84,13 @@ class DatabaseOperations(BaseDatabaseOperations):
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def sql_flush(self, style, tables, sequences):
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if tables:
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if self.postgres_version[0:2] >= (8,1):
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# Postgres 8.1+ can do 'TRUNCATE x, y, z...;'. In fact, it *has to*
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# in order to be able to truncate tables referenced by a foreign
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# key in any other table. The result is a single SQL TRUNCATE
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# statement.
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sql = ['%s %s;' % \
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(style.SQL_KEYWORD('TRUNCATE'),
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style.SQL_FIELD(', '.join([self.quote_name(table) for table in tables]))
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)]
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else:
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# Older versions of Postgres can't do TRUNCATE in a single call, so
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# they must use a simple delete.
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sql = ['%s %s %s;' % \
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(style.SQL_KEYWORD('DELETE'),
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style.SQL_KEYWORD('FROM'),
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style.SQL_FIELD(self.quote_name(table))
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) for table in tables]
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# Perform a single SQL 'TRUNCATE x, y, z...;' statement. It allows
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# us to truncate tables referenced by a foreign key in any other
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# table.
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sql = ['%s %s;' % \
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(style.SQL_KEYWORD('TRUNCATE'),
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style.SQL_FIELD(', '.join([self.quote_name(table) for table in tables]))
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)]
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# 'ALTER SEQUENCE sequence_name RESTART WITH 1;'... style SQL statements
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# to reset sequence indices
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@ -171,17 +161,10 @@ class DatabaseOperations(BaseDatabaseOperations):
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def check_aggregate_support(self, aggregate):
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"""Check that the backend fully supports the provided aggregate.
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The population and sample statistics (STDDEV_POP, STDDEV_SAMP,
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VAR_POP, VAR_SAMP) were first implemented in Postgres 8.2.
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The implementation of population statistics (STDDEV_POP and VAR_POP)
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under Postgres 8.2 - 8.2.4 is known to be faulty. Raise
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NotImplementedError if this is the database in use.
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"""
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if aggregate.sql_function in ('STDDEV_POP', 'STDDEV_SAMP', 'VAR_POP', 'VAR_SAMP'):
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if self.postgres_version[0:2] < (8,2):
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raise NotImplementedError('PostgreSQL does not support %s prior to version 8.2. Please upgrade your version of PostgreSQL.' % aggregate.sql_function)
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if aggregate.sql_function in ('STDDEV_POP', 'VAR_POP'):
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if self.postgres_version[0:2] == (8,2):
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if self.postgres_version[2] is None or self.postgres_version[2] <= 4:
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@ -16,21 +16,9 @@ documentation or reference manuals.
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PostgreSQL notes
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================
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.. versionchanged:: 1.3
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.. versionchanged:: 1.4
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Django supports PostgreSQL 8.0 and higher. If you want to use
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:ref:`database-level autocommit <postgresql-autocommit-mode>`, a
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minimum version of PostgreSQL 8.2 is required.
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.. admonition:: Improvements in recent PostgreSQL versions
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PostgreSQL 8.0 and 8.1 `will soon reach end-of-life`_; there have
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also been a number of significant performance improvements added
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in recent PostgreSQL versions. Although PostgreSQL 8.0 is the minimum
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supported version, you would be well advised to use a more recent
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version if at all possible.
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.. _will soon reach end-of-life: http://wiki.postgresql.org/wiki/PostgreSQL_Release_Support_Policy
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Django supports PostgreSQL 8.2 and higher.
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PostgreSQL 8.2 to 8.2.4
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-----------------------
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@ -376,3 +376,14 @@ Old styles of calling ``cache_page`` decorator
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Some legacy ways of calling :func:`~django.views.decorators.cache.cache_page`
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have been deprecated, please see the docs for the correct way to use this
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decorator.
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Support for PostgreSQL versions older than 8.2
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Django 1.3 dropped support for PostgreSQL versions older than 8.0 and the
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relevant documents suggested to use a recent version because of performance
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reasons but more importantly because end of the upstream support periods for
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releases 8.0 and 8.1 was near (November 2010.)
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Django 1.4 takes that policy further and sets 8.2 as the minimum PostgreSQL
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version it officially supports.
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