Dandandan commented on issue #20847:
URL: https://github.com/apache/datafusion/issues/20847#issuecomment-4060655814

   I saw the overhead of query 99 seems to be mostly solved by avoiding 
`concat_batches` for all the values:
   
   `│ QQuery 99 │ 10721.95 / 10774.34 ±32.19 / 10821.75 ms │    297.50 / 323.08 
±20.65 / 357.12 ms │ +33.35x faster │`
   
   https://github.com/apache/datafusion/pull/20944#issuecomment-4060627979


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