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https://issues.apache.org/jira/browse/KYLIN-5117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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hujiahua updated KYLIN-5117:
----------------------------
    Description: 
The following query execution will report an error:
java.lang.IllegalArgumentException: Unsupported function name PERCENTILE_APPROX 
while executing SQL: "select percentile(t.gmv, 0.5) from  ( select 
buyer_id,sum(price) as gmv  from kylin_sales group by buyer_id ) t"

The sql query:
{quote}
 select percentile(t.gmv, 0.5) from  ( select buyer_id,sum(price) as gmv  from 
kylin_sales group by buyer_id ) t
{quote}


It's better to support `percentile` function after aggregate sub query.

  was:
The following query execution will report an error:
java.lang.IllegalArgumentException: Unsupported function name PERCENTILE_APPROX 
while executing SQL: "select percentile(t.gmv, 0.5) from  ( select 
buyer_id,sum(price) as gmv  from kylin_sales group by buyer_id ) t"

The sql query:
select percentile(t.gmv, 0.5) from  ( select buyer_id,sum(price) as gmv  from 
kylin_sales group by buyer_id ) t

It's better to support `percentile` function after aggregate sub query.


> Support percentile function after aggregate sub query
> -----------------------------------------------------
>
>                 Key: KYLIN-5117
>                 URL: https://issues.apache.org/jira/browse/KYLIN-5117
>             Project: Kylin
>          Issue Type: New Feature
>    Affects Versions: v4.0.0
>            Reporter: hujiahua
>            Priority: Major
>
> The following query execution will report an error:
> java.lang.IllegalArgumentException: Unsupported function name 
> PERCENTILE_APPROX while executing SQL: "select percentile(t.gmv, 0.5) from  ( 
> select buyer_id,sum(price) as gmv  from kylin_sales group by buyer_id ) t"
> The sql query:
> {quote}
>  select percentile(t.gmv, 0.5) from  ( select buyer_id,sum(price) as gmv  
> from kylin_sales group by buyer_id ) t
> {quote}
> It's better to support `percentile` function after aggregate sub query.



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