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-rw-r--r--lib/sqlalchemy/schema.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/schema.py b/lib/sqlalchemy/schema.py
index d7d728f2b..9d68dc007 100644
--- a/lib/sqlalchemy/schema.py
+++ b/lib/sqlalchemy/schema.py
@@ -604,7 +604,7 @@ class Column(SchemaItem, sql._ColumnClause):
c = Column(name or self.name, self.type, self.default, key = name or self.key, primary_key = self.primary_key, nullable = self.nullable, _is_oid = self._is_oid, quote=self.quote, *fk)
c.table = selectable
c.orig_set = self.orig_set
- c._source_column = self
+ c._distance = self._distance + 1
c.__originating_column = self.__originating_column
if not c._is_oid:
selectable.columns.add(c)