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-rw-r--r--sqlglot/optimizer/isolate_table_selects.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sqlglot/optimizer/isolate_table_selects.py b/sqlglot/optimizer/isolate_table_selects.py
index 5d78353..5dfa4aa 100644
--- a/sqlglot/optimizer/isolate_table_selects.py
+++ b/sqlglot/optimizer/isolate_table_selects.py
@@ -21,7 +21,7 @@ def isolate_table_selects(expression, schema=None):
source.replace(
exp.select("*")
.from_(
- alias(source.copy(), source.name or source.alias, table=True),
+ alias(source, source.name or source.alias, table=True),
copy=False,
)
.subquery(source.alias, copy=False)