[jira] [Closed] (KYLIN-3476) Fix TupleExpression verification when parsing sql

["Zhong Yanghong (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-3476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhong Yanghong closed KYLIN-3476.
---------------------------------

Resolved in release 2.4.1 (2018-09-09)

> Fix TupleExpression verification when parsing sql
> -------------------------------------------------
>
>                 Key: KYLIN-3476
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3476
>             Project: Kylin
>          Issue Type: Bug
>    Affects Versions: v2.4.0
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>            Priority: Major
>             Fix For: v2.4.1, v2.5.0
>
>         Attachments: APACHE-KYLIN-3476.patch, b134-12adb0383568.png, image-2018-08-06-17-58-18-760.png
>
>
> Previously there's a validation check for sql, since dynamic column does not support {{sum(col1/col2)}}. However, if the sql has a subquery and {{sum(col1/col2)}} is in the main query rather than the sub-query, this should be OK. One example is as follows:
> {code}
> select T1.D1, sum(T1.gmv/T2.gmv)
> from 
> (select D1, D2, sum(M1) as gmv
> from T
> group by D1, D2) T1
> inner join
> (select D1, D2, sum(M2) as gmv
> from T
> group by D1, D2) T2
> on T1.D1 = T2.D1
> group by T1.D1
> {code}
> Since the outside {{sum(T1.gmv/T2.gmv)}} is handled by calcite rather than Kylin, it's OK and should not go through the verification.



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