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-rw-r--r--lib/sqlalchemy/orm/mapper.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py
index 89c092b58..f22cac329 100644
--- a/lib/sqlalchemy/orm/mapper.py
+++ b/lib/sqlalchemy/orm/mapper.py
@@ -2364,6 +2364,9 @@ class Mapper(InspectionAttr):
@_memoized_configured_property
def _primary_key_props(self):
+ # TODO: this should really be called "identity key props",
+ # as it does not necessarily include primary key columns within
+ # individual tables
return [self._columntoproperty[col] for col in self.primary_key]
def _get_state_attr_by_column(