Do not use savepoints with PostgreSQL prior to 8.0.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8317 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 7 insertions, 0 deletions

diff --git a/django/db/backends/postgresql/base.py b/django/db/backends/postgresql/base.py
index 792026530f..7bcda5b6f6 100644
--- a/django/db/backends/postgresql/base.py
+++ b/django/db/backends/postgresql/base.py
@@ -9,6 +9,7 @@ from django.db.backends.postgresql.client import DatabaseClient
 from django.db.backends.postgresql.creation import DatabaseCreation
 from django.db.backends.postgresql.introspection import DatabaseIntrospection
 from django.db.backends.postgresql.operations import DatabaseOperations
+from django.db.backends.postgresql.version import get_version
 from django.utils.encoding import smart_str, smart_unicode
 
 try:
@@ -115,6 +116,12 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         cursor = self.connection.cursor()
         if set_tz:
             cursor.execute("SET TIME ZONE %s", [settings.TIME_ZONE])
+            if not hasattr(self, '_version'):
+                version = get_version(cursor)
+                self.__class__._version = version
+                if version < (8, 0):
+                    # No savepoint support for earlier version of PostgreSQL.
+                    self.features.uses_savepoints = False
         cursor.execute("SET client_encoding to 'UNICODE'")
         cursor = UnicodeCursorWrapper(cursor, 'utf-8')
         return cursor