[jira] [Comment Edited] (CALCITE-3815) Add missing SQL standard aggregate functions: EVERY, SOME, INTERSECTION

["Feng Zhu (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-3815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17043166#comment-17043166 ] 

Feng Zhu edited comment on CALCITE-3815 at 2/24/20 6:01 AM:
------------------------------------------------------------

It seems like Intersect/Fusion (including codegen) has already been implemented in CALCITE-2355.


was (Author: donnyzone):
It seems like Except/Fusion (including codegen) has already been implemented in CALCITE-2355.

> Add missing SQL standard aggregate functions: EVERY, SOME, INTERSECTION
> -----------------------------------------------------------------------
>
>                 Key: CALCITE-3815
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3815
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Julian Hyde
>            Priority: Major
>
> Add missing SQL standard aggregate functions: EVERY, SOME, INTERSECTION.
> Examples:
> {code}
> SELECT deptno,
>   EVERY(sal < 3000) AS es, SOME(sal < 1000) AS ss,
>   EVERY(comm < 500) AS ec, SOME(comm < 500) AS sc
> FROM emp
> GROUP BY deptno;
> +--------+-------+-------+-------+------+
> | DEPTNO |  ES   |  SS   |  EC   |  SC  |
> +--------+-------+-------+-------+------+
> | 10     | FALSE | FALSE |       |      |
> | 20     | FALSE | TRUE  |       |      |
> | 30     | TRUE  | TRUE  | FALSE | TRUE |
> +--------+-------+-------+-------+------+
> {code}
> {{EVERY}} and {{SOME}} can be implemented by translating to {{MIN}}, {{MAX}}:
> * {{EVERY(condition)}} is equivalent to {{MIN(condition)}};
> * {{SOME(condition)}} is equivalent to {{MAX(condition)}}
> where {{condition}} is a {{BOOLEAN}} expression, possibly allowing {{NULL}} values).
> {{INTERSECTION}} computes the intersection of collections (arrays and multisets). (Compare to {{FUSION}}, which computes the union of collections.)
> {{FUSION}} is in the operator table but there is no code-generation for it. This task should implement {{FUSION}} and {{INTERSECTION}} so that we can run queries in Enumerable mode.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)