Jackie-Jiang commented on issue #8040:
URL: https://github.com/apache/pinot/issues/8040#issuecomment-1016744432


   Currently `1 + N at first level` queries need to be fired to solve this.
   
   I think this query can be modeled using subquery (not supported yet):
   `SELECT Country, salesPersonName, SUM(AmountSold) FROM sales WHERE Country 
IN (SELECT Country FROM sales GROUP BY Country ORDER BY SUM(AmountSold) DESC 
LIMIT 2) GROUP BY Country, salesPersonName ORDER BY SUM(AmountSold) DESC`
   
   Some information is missing though: sales per country, no guarantee that N 
persons are returned from each country


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