gatorsmile commented on a change in pull request #24842: [SPARK-28002][SQL]
Support WITH clause column aliases
URL: https://github.com/apache/spark/pull/24842#discussion_r293274082
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File path: sql/core/src/test/resources/sql-tests/inputs/cte.sql
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@@ -24,6 +24,10 @@ SELECT t1.id AS c1,
FROM CTE1 t1
CROSS JOIN CTE1 t2;
+-- CTE with column alias
+WITH t(x) AS (SELECT 1)
Review comment:
Could you add more test cases? For example, can a with clause in a subquery
shadow a with clause in an enclosing query with the same name? Another example,
use with clauses in a subquery expression?
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