QueryableAttribute can be used as DDL column

We have a lot of mappings with like ForeignKey(A.id)
so this needs to be included.

Change-Id: I8ac4211fb09720f093fe7f6353f365ee1d7faaae

diff --git a/lib/sqlalchemy/orm/attributes.py b/lib/sqlalchemy/orm/attributes.py
index b5faa7cbf13cddb4f7142adf2b89a735ac3eedcb..bb7eda5ac2274acfa48696fb74a03061186767ae 100644 (file)
--- a/lib/sqlalchemy/orm/attributes.py
+++ b/lib/sqlalchemy/orm/attributes.py
@@ -136,6 +136,7 @@ class QueryableAttribute(
     interfaces.PropComparator[_T],
     roles.JoinTargetRole,
     roles.OnClauseRole,
+    roles.DDLConstraintColumnRole,
     sql_base.Immutable,
     cache_key.SlotsMemoizedHasCacheKey,
     util.MemoizedSlots,