Fix: unnest subqueries in executor closes #1835

tobymao · Jun 27, 2023 · cb0ac10 · cb0ac10
1 parent 9de9667
commit cb0ac10
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diff --git a/sqlglot/planner.py b/sqlglot/planner.py
@@ -91,6 +91,7 @@ def from_expression(
             A Step DAG corresponding to `expression`.
         """
         ctes = ctes or {}
+        expression = expression.unnest()
         with_ = expression.args.get("with")
 
         # CTEs break the mold of scope and introduce themselves to all in the context.

diff --git a/tests/test_executor.py b/tests/test_executor.py
@@ -253,6 +253,11 @@ def test_set_operations(self):
                 ["a"],
                 [("a",)],
             ),
+            (
+                "(SELECT a FROM x) EXCEPT (SELECT a FROM y)",
+                ["a"],
+                [("a",)],
+            ),
             (
                 "SELECT a FROM x INTERSECT SELECT a FROM y",
                 ["a"],