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-rw-r--r--lib/sqlalchemy/sql/traversals.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/traversals.py b/lib/sqlalchemy/sql/traversals.py
index 3849749de..f2099f191 100644
--- a/lib/sqlalchemy/sql/traversals.py
+++ b/lib/sqlalchemy/sql/traversals.py
@@ -378,6 +378,14 @@ class CacheKey(namedtuple("CacheKey", ["key", "bindparams"])):
_anon_map = prefix_anon_map()
return {b.key % _anon_map: b.effective_value for b in self.bindparams}
+ def _apply_params_to_element(self, original_cache_key, target_element):
+ translate = {
+ k.key: v.value
+ for k, v in zip(original_cache_key.bindparams, self.bindparams)
+ }
+
+ return target_element.params(translate)
+
def _clone(element, **kw):
return element._clone()