cloud-fan commented on issue #27444: [SPARK-30614][SQL] The native ALTER COLUMN syntax should change one property at a time URL: https://github.com/apache/spark/pull/27444#issuecomment-582240776 @maropu before 3.0 we only have hive style ALTER COLUMN syntax (which can change multiple properties at one time), the syntax touched here is newly added in 3.0. That's why I think it's better to make it follow SQL standard first, and have more discussions about how to extend it later.
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