[jira] [Commented] (DRILL-2330) Add support for nested aggregate expressions for window aggregates

["Aman Sinha (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-2330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15323602#comment-15323602 ] 

Aman Sinha commented on DRILL-2330:
-----------------------------------

Assigning to  [~gparai] who added support for it in CALCITE-750.   As part of this we should test the following TPC-DS queries which have nested aggregates within window aggregates:  12, 20, 47, 51, 53, 57, 63, 89, 98

> Add support for nested aggregate expressions for window aggregates
> ------------------------------------------------------------------
>
>                 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: Gautam Kumar Parai
>             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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