HyukjinKwon commented on a change in pull request #35831:
URL: https://github.com/apache/spark/pull/35831#discussion_r825587972
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/numberFormatExpressions.scala
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@@ -52,6 +52,11 @@ import org.apache.spark.unsafe.types.UTF8String
> SELECT _FUNC_('12,454.8-', '99G999D9S');
-12454.8
""",
+ note = """
+ ToNumber has better compatibility with number format based on the
underlying implementation.
+ For example: to_number('1,11,6.11', '000,,0.00') works good and returns
1116.11. Please see
+ the implementation of NumberFormatter.
Review comment:
```suggestion
the implementation of
`org.apache.spark.sql.catalyst.util.NumberFormatter`.
```
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