[GitHub] [spark] liang3zy22 commented on pull request #40817: [SPARK-42845][SQL] Update the error class _LEGACY_ERROR_TEMP_2010 to MERGE_UNSUPPORTED_BY_WINDOW_FUNCTION

["liang3zy22 (via GitHub)" <gi...@apache.org>]

liang3zy22 commented on PR #40817:
URL: https://github.com/apache/spark/pull/40817#issuecomment-1510686511

   I can't find a method to trigger this error_class using sql command. This error_class are only thrown by "mergeExpressions" field of AggregateWindowFunction. But this field isn't called anywhere in all aggregate window function. Is it an internal error?


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