[jira] [Resolved] (ARROW-11431) [Rust] [DataFusion] Add support for the SQL HAVING clause

["Andrew Lamb (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-11431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Lamb resolved ARROW-11431.
---------------------------------
    Fix Version/s: 4.0.0
       Resolution: Fixed

Issue resolved by pull request 9364
[https://github.com/apache/arrow/pull/9364]

> [Rust] [DataFusion] Add support for the SQL HAVING clause
> ---------------------------------------------------------
>
>                 Key: ARROW-11431
>                 URL: https://issues.apache.org/jira/browse/ARROW-11431
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Rust - DataFusion
>            Reporter: Daniel Russo
>            Assignee: Daniel Russo
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>          Time Spent: 4h 10m
>  Remaining Estimate: 0h
>
> We do not yet have support for the SQL {{HAVING}} clause. {{HAVING}} is used to filter post-aggregation, typically against an aggregated column. For example:
> {code}
> SELECT c1, MAX(c2) FROM t GROUP BY c1 HAVING MAX(c2) > 100
> {code}
> {{HAVING}} expressions need not reference aggregates in the {{SELECT}}, for example:
> {code}
> SELECT c1, MAX(c2) FROM t GROUP BY c1 HAVING MIN(c2) > 100
> {code}
> {{HAVING}} expressions need not filter on aggregated columns, for example:
> {code}
> SELECT c1, MAX(c2) FROM t GROUP BY c1 HAVING c1 > 100
> {code}
> Lastly, {{HAVING}} expressions need not be used in conjunction with a {{GROUP BY}}, for example: 
> {code}
> SELECT MAX(c1) FROM t HAVING MAX(c1) > 100
> {code}



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