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https://issues.apache.org/jira/browse/KYLIN-1122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15110184#comment-15110184
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liyang commented on KYLIN-1122:
-------------------------------
The patch overall works. Xiaoyu has tested from create cube to query. Still a
few actions after reviewed with Xiaoyu.
- The KYLIN-1122 branch need be re-created to rebase on top of 2.x-staging.
- Changes in OLAPEnumerator should go into MeasureType.adjustSqlDigest(), with
the interface expanded a bit.
- Need integration test. I'll add document to describe how Kylin integration
test run.
Many thanks to Xiaoyu's effort, this feature is close to complete.
> 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: v2.0, 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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