[jira] [Commented] (KYLIN-1122) Kylin support detail data query from fact table

["Xiaoyu Wang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KYLIN-1122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15181972#comment-15181972 ] 

Xiaoyu Wang commented on KYLIN-1122:
------------------------------------

Sorry for my late contribute! recently busy!
I create a branch KYLIN-1122-B2 base on 2.x-staging.
The IT tests run successful!
Please [~liyang.gmt8@gmail.com] help to review!
I'm working on the patch for 1.x. and create a branch base on 1.x-staging later!

> Kylin support detail data query from fact table
> -----------------------------------------------
>
>                 Key: KYLIN-1122
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1122
>             Project: Kylin
>          Issue Type: New Feature
>          Components: Query Engine
>    Affects Versions: v1.2
>            Reporter: Xiaoyu Wang
>            Assignee: liyang
>             Fix For: v2.1, v1.3
>
>         Attachments: 0001-KYLIN-1122-Kylin-support-detail-data-query-from-fact(2.x-staging).patch, 0001-KYLIN-1122-Kylin-support-detail-data-query-from-fact(update-v2-1.x-staging).patch, 0001-KYLIN-1122-Kylin-support-detail-data-query-from-fact-new-impl-under-refactoring-2.x-staging.patch
>
>
> Now Kylin does not support query correct detail rows from fact table like:
> select column1,column2,column3 from fact_table
> The jira KYLIN-1075 add the "SUM" function on the measure column if defined.
> But only the column number type is support.
> I change some code to support this issue:
> Add a "VALUE" measure function : the same value and datatype in the input and output of this function.
> If you want to query detail data from fact table
> *require*:
> 1.Configure the column which not dimensions to "VALUE" or "SUM" measure.(If not configure measure function in the column will get NULL value)
> 2.The source table must has an unique value column and configure it as dimension.
> If you have the better solution please comment here.



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