alpass163 opened a new pull request, #17074:
URL: https://github.com/apache/iotdb/pull/17074

   fix the optimization for LAST/FIRST/LAST_BY/FIRST_BY on non-time columns, 
modify the AccumulatorFactory to explicitly verify if the sort key in 
aggregations(last, first, last_by, first_by) is actually the time column


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