Refactored get_deferrable_sql() to DatabaseOperations.deferrable_sql(). Refs #5106

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5955 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 7 insertions, 0 deletions

diff --git a/django/db/backends/__init__.py b/django/db/backends/__init__.py
index 41295a15b7..ea75dcf840 100644
--- a/django/db/backends/__init__.py
+++ b/django/db/backends/__init__.py
@@ -78,3 +78,10 @@ class BaseDatabaseOperations(object):
         method should return None if no casting is necessary.
         """
         return None
+
+    def deferrable_sql(self):
+        """
+        Returns the SQL necessary to make a constraint "initially deferred"
+        during a CREATE TABLE statement.
+        """
+        return ''