- Fixed bug where a column with a SQL or server side default

that was excluded from a mapping with include_properties
or exclude_properties would result in UnmappedColumnError.
[ticket:1995]

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py
index db445076c..a6d2c95f5 100644
--- a/lib/sqlalchemy/orm/mapper.py
+++ b/lib/sqlalchemy/orm/mapper.py
@@ -1937,7 +1937,8 @@ class Mapper(object):
         if postfetch_cols:
             state.expire_attributes(state.dict, 
                                 [self._columntoproperty[c].key 
-                                for c in postfetch_cols]
+                                for c in postfetch_cols if c in 
+                                self._columntoproperty]
                             )
 
         # synchronize newly inserted ids from one table to the next