- added "statement_options()" to Query, to so options can be

passed to the resulting statement. Currently only
Select-statements have these options, and the only option
used is "stream_results", and the only dialect which knows
"stream_results" is psycopg2.
- Query.yield_per() will set the "stream_results" statement
option automatically.
- Added "statement_options()" to Selects, which set statement
specific options. These enable e.g. dialect specific options
such as whether to enable using server side cursors, etc.
- The psycopg2 now respects the statement option
"stream_results". This option overrides the connection setting
"server_side_cursors". If true, server side cursors will be
used for the statement. If false, they will not be used, even
if "server_side_cursors" is true on the
connection. [ticket:1619]
- added a "frozendict" from http://code.activestate.com/recipes/414283/,
adding more default collections as immutable class vars on
Query, Insert, Select

1 files changed, 1 insertions, 2 deletions

diff --git a/lib/sqlalchemy/schema.py b/lib/sqlalchemy/schema.py
index 7c9fa58fe..e40b6f592 100644
--- a/lib/sqlalchemy/schema.py
+++ b/lib/sqlalchemy/schema.py
@@ -2027,10 +2027,9 @@ class SchemaVisitor(visitors.ClauseVisitor):
     __traverse_options__ = {'schema_visitor':True}
 
 
-class DDLElement(expression.ClauseElement):
+class DDLElement(expression._Executable, expression.ClauseElement):
     """Base class for DDL expression constructs."""
     
-    supports_execution = True
     _autocommit = True
 
     target = None