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-rw-r--r--sqlglot/optimizer/scope.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sqlglot/optimizer/scope.py b/sqlglot/optimizer/scope.py
index 5a3ed5a..badbb87 100644
--- a/sqlglot/optimizer/scope.py
+++ b/sqlglot/optimizer/scope.py
@@ -300,7 +300,7 @@ class Scope:
list[exp.Expression]: expressions
"""
if isinstance(self.expression, exp.Union):
- return []
+ return self.expression.unnest().selects
return self.expression.selects
@property