add TABLESPACE parameter to ENGINE. more see: http://magazine.redhat.com/2007/12/12/tip-from-an-rhce-memory-storage-on-postgresql/

django+postgres for tests in RAM

diff --git a/django/db/backends/postgresql_psycopg2/creation.py b/django/db/backends/postgresql_psycopg2/creation.py
index 1f5609a..4468062 100644
--- a/django/db/backends/postgresql_psycopg2/creation.py
+++ b/django/db/backends/postgresql_psycopg2/creation.py
@@ -34,9 +34,12 @@ class DatabaseCreation(BaseDatabaseCreation):
 
     def sql_table_creation_suffix(self):
         assert self.connection.settings_dict['TEST_COLLATION'] is None, "PostgreSQL does not support collation setting at database creation time."
+        suffix = ''
+        if self.connection.settings_dict.get('TEST_TABLESPACE'):
+            suffix += " WITH TABLESPACE = %s " % self.connection.settings_dict['TEST_TABLESPACE']
         if self.connection.settings_dict['TEST_CHARSET']:
-            return "WITH ENCODING '%s'" % self.connection.settings_dict['TEST_CHARSET']
-        return ''
+            suffix += " WITH ENCODING '%s' " % self.connection.settings_dict['TEST_CHARSET']
+        return suffix
 
     def sql_indexes_for_field(self, model, f, style):
         if f.db_index and not f.unique: