[jira] [Updated] (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:all-tabpanel ]

hongbin ma updated KYLIN-1855:
------------------------------
    Assignee: liyang  (was: Zhong Yanghong)

> 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: liyang
>             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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