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-rw-r--r--lib/sqlalchemy/orm/dependency.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/dependency.py b/lib/sqlalchemy/orm/dependency.py
index d4680e394..9c2c5ade3 100644
--- a/lib/sqlalchemy/orm/dependency.py
+++ b/lib/sqlalchemy/orm/dependency.py
@@ -43,6 +43,7 @@ class DependencyProcessor(object):
else:
self._passive_update_flag = attributes.PASSIVE_OFF
+ self.sort_key = "%s_%s" % (self.parent._sort_key, prop.key)
self.key = prop.key
if not self.prop.synchronize_pairs:
raise sa_exc.ArgumentError(