AngersZhuuuu commented on a change in pull request #33363:
URL: https://github.com/apache/spark/pull/33363#discussion_r673684054
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File path: sql/core/src/test/resources/sql-tests/results/transform.sql.out
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@@ -202,9 +202,9 @@ FROM t
-- !query schema
struct<a:string,b:string,c:string,d:string>
-- !query output
-1 true Spark SQL null
-2 false Spark SQL null
-3 true Spark SQL null
+1 true Spark SQL NULL
Review comment:
> isn't the default value `\N`?
it's null, when convert to input string, it will be convert to `\N`, when
handle output it's converted to null, then in final result it become `NULL`
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