yaooqinn commented on pull request #28692:
URL: https://github.com/apache/spark/pull/28692#issuecomment-637219782
```java
+ val defaultLocale: Locale = Locale.ROOT
def defaultPattern(): String = s"${DateFormatter.defaultPattern} HH:mm:ss"
diff --git
a/sql/core/src/test/resources/sql-tests/results/ansi/datetime.sql.out
b/sql/core/src/test/resources/sql-tests/results/ansi/datetime.sql.out
index a9a3bccadc..94fcc3b4ad 100644
--- a/sql/core/src/test/resources/sql-tests/results/ansi/datetime.sql.out
+++ b/sql/core/src/test/resources/sql-tests/results/ansi/datetime.sql.out
@@ -1032,4 +1032,4 @@ select to_timestamp('2020-01-01', 'YYYY-ww-uu')
-- !query schema
struct<to_timestamp(2020-01-01, YYYY-ww-uu):timestamp>
-- !query output
-2019-12-30 00:00:00
+2019-12-29 00:00:00
```
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