HeartSaVioR commented on issue #23285: [SPARK-26224][SQL] Avoid creating many project on subsequent calls to withColumn URL: https://github.com/apache/spark/pull/23285#issuecomment-447225378 @mgaido91 Yeah, agreed there's a workaround (`select`), as well as it would be more ideal if we can collapse chain of withColumn properly. This is based on that it doesn't seem to achieve it, and we need to guide end users to take a workaround. End users using withColumn seem to feel more convenient than using select, then IMHO `withColumns` might become another convenient method for end users, alternative of withColumn.
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