cloud-fan commented on code in PR #37751:
URL: https://github.com/apache/spark/pull/37751#discussion_r960184855
##########
sql/core/src/test/resources/sql-tests/inputs/cte-nested.sql:
##########
@@ -146,4 +146,61 @@ WITH
)
SELECT * FROM t3
)
-SELECT * FROM t2;
\ No newline at end of file
+SELECT * FROM t2;
+
+-- CTE nested in CTE main body FROM clause references outer CTE def
+WITH cte_outer AS (
+ SELECT 1
+)
+SELECT * FROM (
+ WITH cte_inner AS (
+ SELECT * FROM cte_outer
+ )
+ SELECT * FROM cte_inner
+);
+
+-- CTE double nested in CTE main body FROM clause references outer CTE def
+WITH cte_outer AS (
+ SELECT 1
+)
+SELECT * FROM (
+ WITH cte_inner AS (
+ SELECT * FROM (
+ WITH cte_inner_inner AS (
+ SELECT * FROM cte_outer
+ )
+ SELECT * FROM cte_inner_inner
+ )
+ )
+ SELECT * FROM cte_inner
+);
+
+-- Invalid reference to invisible CTE def nested CTE def
+WITH cte_outer AS (
+ WITH cte_invisible_inner AS (
+ SELECT 1
+ )
+ SELECT * FROM cte_invisible_inner
+)
+SELECT * FROM (
+ WITH cte_inner AS (
+ SELECT * FROM cte_invisible_inner
+ )
+ SELECT * FROM cte_inner
+);
+
+-- Invalid reference to invisible CTE def nested CTE def (in FROM)
+WITH cte_outer AS (
+ SELECT * FROM (
+ WITH cte_invisible_inner AS (
+ SELECT 1
+ )
+ SELECT * FROM cte_invisible_inner
+ )
+)
+SELECT * FROM (
+ WITH cte_inner AS (
+ SELECT * FROM cte_invisible_inner
+ )
+ SELECT * FROM cte_inner
Review Comment:
isn't this test exactly the same as the one above?
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