gengliangwang commented on a change in pull request #31349:
URL: https://github.com/apache/spark/pull/31349#discussion_r580023282
##########
File path:
sql/core/src/test/resources/sql-tests/results/postgreSQL/union.sql.out
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@@ -682,10 +682,10 @@ struct<id:bigint>
-- !query
SELECT cast('3.4' as decimal(38, 18)) UNION SELECT 'foo'
-- !query schema
-struct<CAST(3.4 AS DECIMAL(38,18)):string>
+struct<>
-- !query output
-3.400000000000000000
-foo
+org.apache.spark.SparkException
Review comment:
See the discussion in
https://github.com/apache/spark/pull/31390#issuecomment-783116851.
The function `btrim` was added for string type as per @beliefer
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