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-rw-r--r--lib/sqlalchemy/sql/elements.py3
-rw-r--r--lib/sqlalchemy/sql/selectable.py3
2 files changed, 4 insertions, 2 deletions
diff --git a/lib/sqlalchemy/sql/elements.py b/lib/sqlalchemy/sql/elements.py
index fdb3fc8bb..346a84ddf 100644
--- a/lib/sqlalchemy/sql/elements.py
+++ b/lib/sqlalchemy/sql/elements.py
@@ -357,7 +357,8 @@ class ClauseElement(
# process leaves around a lot of remnants of the previous clause
# typically in the form of column expressions still attached to the
# old table.
- c._is_clone_of = self
+ cc = self._is_clone_of
+ c._is_clone_of = cc if cc is not None else self
return c
diff --git a/lib/sqlalchemy/sql/selectable.py b/lib/sqlalchemy/sql/selectable.py
index 0692483e9..e143d1476 100644
--- a/lib/sqlalchemy/sql/selectable.py
+++ b/lib/sqlalchemy/sql/selectable.py
@@ -4135,7 +4135,8 @@ class _MemoizedSelectEntities(
def _clone(self, **kw):
c = self.__class__.__new__(self.__class__)
c.__dict__ = {k: v for k, v in self.__dict__.items()}
- c._is_clone_of = self
+
+ c._is_clone_of = self.__dict__.get("_is_clone_of", self)
return c
@classmethod