[jira] [Comment Edited] (KYLIN-1855) Should exclude those joins in whose related lookup tables no dimensions are used in cube

["hongbin ma (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KYLIN-1855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15391063#comment-15391063 ] 

hongbin ma edited comment on KYLIN-1855 at 7/24/16 1:41 PM:
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seems you moved maven-checkstyle-plugin from build-> plugins to build -> pluginManagement -> plugins in https://github.com/apache/kylin/commit/780d002fbac3b20a5d8194957ed9008d84d71ad1. why? After I move back the checks come back.


was (Author: mahongbin):
seems you moved maven-checkstyle-plugin from build-> plugins to build -> pluginManagement -> plugins. why? After I move back the checks come back.

> Should exclude those joins in whose related lookup tables no dimensions are used in cube
> ----------------------------------------------------------------------------------------
>
>                 Key: KYLIN-1855
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1855
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>             Fix For: v1.5.4
>
>         Attachments: exclude_unused_joins.patch
>
>
> A cube is based on a model in which a star schema is defined. In some cases, the cube utilizes only a few lookup tables rather than all. In this case, when creating the sql for the flat table, those lookup tables should not be included. Otherwise, it will confuse users when query. If users do query according to the definition of the flat table, error of no realization will occur due to lack of the related join.



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