maropu commented on issue #25963: [SPARK-28137][SQL] Add Postgresql function to_number. URL: https://github.com/apache/spark/pull/25963#issuecomment-548615090 What's an usecase for this func? Is this useful for users? For example, in the example of this PR description, we can just use an explicit cast like this? ``` scala> sql("select cast('-12454.8' as double)").show +------------------------+ |CAST(-12454.8 AS DOUBLE)| +------------------------+ | -12454.8| +------------------------+ ```
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