cloud-fan commented on code in PR #40865:
URL: https://github.com/apache/spark/pull/40865#discussion_r1177586693
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sql/core/src/test/resources/sql-tests/inputs/subquery/scalar-subquery/scalar-subquery-select.sql:
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@@ -235,3 +235,6 @@ SELECT c, (
FROM (VALUES (0, 6), (1, 5), (2, 4), (3, 3)) t1(a, b)
WHERE a + b = c
) FROM (VALUES (6)) t2(c);
+
+-- SPARK-43156: scalar subquery with Literal result like `COUNT(1) is null`
+SELECT *, (SELECT count(1) is null FROM t2 WHERE t1.c1 = t2.c1) FROM t1
Review Comment:
can you also test the query I mentioned before that has no count function?
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