[jira] [Closed] (CALCITE-5283) Add ARG_MIN, ARG_MAX (aka MIN_BY, MAX_BY) aggregate functions

["Jess Balint (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jess Balint closed CALCITE-5283.
--------------------------------

Resolved in release 1.33.0 (2023-02-06)

> Add ARG_MIN, ARG_MAX (aka MIN_BY, MAX_BY) aggregate functions
> -------------------------------------------------------------
>
>                 Key: CALCITE-5283
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5283
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Julian Hyde
>            Assignee: Zou
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.33.0
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> Add ARG_MIN, ARG_MAX (aka MIN_BY, MAX_BY) aggregate functions.
> For example, the following query prints the name of the lowest paid employee in each department:
> {code:java}
> SELECT deptno, ARG_MIN(sal, ename)
> FROM emp
> GROUP BY deptno;
> +------------+------------+
> | deptno     | _c1        |
> +------------+------------+
> | 10         | MILLER     |
> | 20         | SMITH      |
> | 30         | JAMES      |
> +------------+------------+
> {code}
> If multiple employees have the same salary, arbitrarily chooses one to return.
> See [Yandex description of ARG_MIN|https://cloud.yandex.com/en/docs/datalens/function-ref/ARG_MIN]. Also implemented in Alibaba MaxCompute, Clickhouse, DuckDB. (And in Alibaba MaxCompute, Spark SQL, Firebolt, PrestoDB, Trino as MIN_BY/MAX_BY.)



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