alamb commented on issue #19970:
URL: https://github.com/apache/datafusion/issues/19970#issuecomment-3796673581

   FWIW the actual clickbench runs (on benchmark.clickhouse.com) don't count 
the time to `CREATE EXTERNAL TABLE` 
   
   So if the schema inference isn't part of of the actual query, this 
optimization may not help the benchmark results 
   
   It is not a bad thing to do, I am just commenting regarding the benchmark


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