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Posted to dev@drill.apache.org by "Abhishek Girish (JIRA)" <ji...@apache.org> on 2015/02/27 02:21:04 UTC

[jira] [Created] (DRILL-2330) Add support for nested aggregate expressions

Abhishek Girish created DRILL-2330:
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             Summary: Add support for nested aggregate expressions
                 Key: DRILL-2330
                 URL: https://issues.apache.org/jira/browse/DRILL-2330
             Project: Apache Drill
          Issue Type: Improvement
          Components: Query Planning & Optimization
    Affects Versions: 0.8.0
            Reporter: Abhishek Girish
            Assignee: Jinfeng Ni
             Fix For: Future
         Attachments: drillbit.log

Aggregate expressions currently cannot be nested. 

*The following query fails to validate:*
{code:sql}
select avg(sum(i_item_sk)) from item;
{code}

Error:
Query failed: SqlValidatorException: Aggregate expressions cannot be nested

Log attached. 

Reference: TPCDS queries (20, 63, 98, ...) fail to execute.




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