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From "jiaan.geng (Jira)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-30395) When one or more DISTINCT aggregate expressions operate on the same field, the DISTINCT aggregate expression allows the use of the FILTER clause
Date Tue, 31 Dec 2019 08:23:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-30395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

jiaan.geng updated SPARK-30395:
-------------------------------
    Description: 
This ticket is related to https://issues.apache.org/jira/browse/SPARK-27986

This ticket will support:

When one or more DISTINCT aggregate expressions operate on the same field, the DISTINCT aggregate
expression allows the use of the FILTER clause

such as:

 
{code:java}
select sum(distinct id) filter (where sex = 'man') from student;
select class_id, sum(distinct id) filter (where sex = 'man') from student group by class_id;
select count(id) filter (where class_id = 1), sum(distinct id) filter (where sex = 'man')
from student;
select class_id, count(id) filter (where class_id = 1), sum(distinct id) filter (where sex
= 'man') from student group by class_id;
select sum(distinct id), sum(distinct id) filter (where sex = 'man') from student;
select class_id, sum(distinct id), sum(distinct id) filter (where sex = 'man') from student
group by class_id;
select class_id, count(id), count(id) filter (where class_id = 1), sum(distinct id), sum(distinct
id) filter (where sex = 'man') from student group by class_id;
{code}
 

 but not support:

 

  was:
This ticket is related to https://issues.apache.org/jira/browse/SPARK-27986

This ticket will support:

When one or more DISTINCT aggregate expressions operate on the same field, the DISTINCT aggregate
expression allows the use of the FILTER clause

 


> When one or more DISTINCT aggregate expressions operate on the same field, the DISTINCT
aggregate expression allows the use of the FILTER clause
> ------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-30395
>                 URL: https://issues.apache.org/jira/browse/SPARK-30395
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: jiaan.geng
>            Priority: Major
>
> This ticket is related to https://issues.apache.org/jira/browse/SPARK-27986
> This ticket will support:
> When one or more DISTINCT aggregate expressions operate on the same field, the DISTINCT
aggregate expression allows the use of the FILTER clause
> such as:
>  
> {code:java}
> select sum(distinct id) filter (where sex = 'man') from student;
> select class_id, sum(distinct id) filter (where sex = 'man') from student group by class_id;
> select count(id) filter (where class_id = 1), sum(distinct id) filter (where sex = 'man')
from student;
> select class_id, count(id) filter (where class_id = 1), sum(distinct id) filter (where
sex = 'man') from student group by class_id;
> select sum(distinct id), sum(distinct id) filter (where sex = 'man') from student;
> select class_id, sum(distinct id), sum(distinct id) filter (where sex = 'man') from student
group by class_id;
> select class_id, count(id), count(id) filter (where class_id = 1), sum(distinct id),
sum(distinct id) filter (where sex = 'man') from student group by class_id;
> {code}
>  
>  but not support:
>  



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