From: Bruno Binet <bruno.binet@gmail.com>
Date: Wed, 26 Sep 2012 22:08:28 +0000 (+0200)
Subject: do not fail when compare_server_default compares None values
X-Git-Tag: rel_0_4_0~4^2^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de5253c9915a160f8505ce12d85ec871cbf2408f;p=thirdparty%2Fsqlalchemy%2Falembic.git

do not fail when compare_server_default compares None values
---

diff --git a/alembic/ddl/postgresql.py b/alembic/ddl/postgresql.py
index fedaf102..1f146789 100644
--- a/alembic/ddl/postgresql.py
+++ b/alembic/ddl/postgresql.py
@@ -17,6 +17,9 @@ class PostgresqlImpl(DefaultImpl):
 
         conn_col_default = inspector_column['default']
 
+        if None in (conn_col_default, rendered_metadata_default):
+            return conn_col_default != rendered_metadata_default
+
         if metadata_column.type._type_affinity is not sqltypes.String:
             rendered_metadata_default = re.sub(r"^'|'$", "", rendered_metadata_default)