cloud-fan commented on issue #24195: [SPARK-25496][SQL] Deprecate from_utc_timestamp and to_utc_timestamp URL: https://github.com/apache/spark/pull/24195#issuecomment-476875361 long time ago I tried to improve these 2 functions in https://github.com/apache/spark/pull/21169 but now I can't remember all the details. These 2 functions are confusing as Spark's timestamp is UTC timestamp and users can't associate a timezone to it. IIUC these two functions look correctly if the input is string and we cast the result to string. Otherwise these two functions do not make any sense.
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