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Posted to issues@kylin.apache.org by "jiatao.tao (JIRA)" <ji...@apache.org> on 2017/08/08 01:34:00 UTC

[jira] [Commented] (KYLIN-2681) Convert input sql's expression to computed column if computed colum defined

    [ https://issues.apache.org/jira/browse/KYLIN-2681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16117701#comment-16117701 ] 

jiatao.tao commented on KYLIN-2681:
-----------------------------------

Remove unused hard-code BI transform code

> Convert input sql's expression to computed column if computed colum defined
> ---------------------------------------------------------------------------
>
>                 Key: KYLIN-2681
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2681
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Query Engine
>    Affects Versions: v2.0.0
>            Reporter: jiatao.tao
>            Assignee: jiatao.tao
>            Priority: Minor
>             Fix For: Future
>
>
> convert user's input sql's expression to computed column if computed column already defined.For example :
> *define computed column:*  
>   cc1:a*b+c
> *user's input sql*
>   select t1.a*t1.b+t1.c from table1 t1
> and then will be tranformed to:
>   select t1.cc1 from table1 t1



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