panbingkun commented on PR #47628:
URL: https://github.com/apache/spark/pull/47628#issuecomment-2272679935
- Yes, in the syntax `SHOW COLUMNS ... {FROM | IN} ... {FROM | IN} ...`, the
second clause `{FROM | IN} ..` is actually unnecessary, but due to historical
reasons, if we change it to ``SHOW COLUMNS ... {FROM | IN} ...`, it is a `break
change` (at least when the end-user run it, it will generate an error).
- The modification here is only to align this syntax in v1 and v2, `not
checking` can cause confusion for end-users
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