uros-db commented on code in PR #55986:
URL: https://github.com/apache/spark/pull/55986#discussion_r3275020404
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sql/core/src/test/scala/org/apache/spark/sql/execution/SQLFunctionSuite.scala:
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@@ -308,6 +308,21 @@ class SQLFunctionSuite extends SharedSparkSession {
}
}
+ test("SPARK-56945: CTE preserves non-nullable SQL UDF body in materialized
schema") {
Review Comment:
Please consider one extra test case with 3-level nesting
(wrap_int(wrap_int(non_null_one()))) to exercise multiple deferred iterations.
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