jayzhan211 commented on PR #15867:
URL: https://github.com/apache/datafusion/pull/15867#issuecomment-2832928771

   Q14
   ```
   SELECT "SearchPhrase", COUNT(DISTINCT "UserID") AS u FROM hits WHERE 
"SearchPhrase" <> '' GROUP BY "SearchPhrase" ORDER BY u DESC LIMIT 10;
   ```
   
   This query is 2x slower, we need to find the reason and optimize it.


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