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-rw-r--r--sqlglot/optimizer/normalize.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/sqlglot/optimizer/normalize.py b/sqlglot/optimizer/normalize.py
index 40668ef..b013312 100644
--- a/sqlglot/optimizer/normalize.py
+++ b/sqlglot/optimizer/normalize.py
@@ -152,12 +152,14 @@ def _distribute(a, b, from_func, to_func, cache):
lambda c: to_func(
uniq_sort(flatten(from_func(c, b.left)), cache),
uniq_sort(flatten(from_func(c, b.right)), cache),
+ copy=False,
),
)
else:
a = to_func(
uniq_sort(flatten(from_func(a, b.left)), cache),
uniq_sort(flatten(from_func(a, b.right)), cache),
+ copy=False,
)
return a