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Posted to issues@kylin.apache.org by "Billy Liu (JIRA)" <ji...@apache.org> on 2017/11/06 14:33:00 UTC

[jira] [Commented] (KYLIN-3012) Error when using UNION ALL with CASE WHEN to query

    [ https://issues.apache.org/jira/browse/KYLIN-3012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16240370#comment-16240370 ] 

Billy Liu commented on KYLIN-3012:
----------------------------------

Thanks [~revolyw] for reporting this issue. Could you reproduce this issue by the sample cube? It will help others to identify the root cause. 

> Error when using UNION ALL with CASE WHEN to query
> --------------------------------------------------
>
>                 Key: KYLIN-3012
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3012
>             Project: Kylin
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: v2.1.0
>            Reporter: willow
>            Assignee: liyang
>            Priority: Minor
>
> sql like following:
> SELECT 
>   case when c.login_cnt is null then 0 else c.login_cnt end as login_cnt, 
>   case when f.work_cnt  is null then 0 else f.work_cnt  end as work_cnt, 
>   case when d.received_cnt is null then 0 else d.received_cnt end as received_cnt, 
>   case when e.download_cnt is null then 0 else e.download_cnt end as download_cnt, 
>   case when a.ent_view_cnt is null then 0 else a.ent_view_cnt end as ent_view_cnt, 
>   case when b.work_view_cnt is null then 0 else b.work_view_cnt end as work_view_cnt
> FROM( 
>   SELECT count(*) as ent_view_cnt 
>   FROM adl.ent_backstage_entview 
>   WHERE  1=1   AND ent_id = 2352083 
> AND create_dt >= {d'2018-02-06'}
> AND create_dt <= {d'2019-09-01'}
> )a, (
>   SELECT count(*) as work_view_cnt 
>   FROM adl.ent_backstage_workview
>   WHERE  1=1   AND ent_id = 2352083 
> AND create_dt >= {d'2018-02-06'}
> AND create_dt <= {d'2019-09-01'}
> )b, (
>   SELECT count(*) as login_cnt
>   FROM adl.ent_backstage_opration
>   WHERE  1=1   AND ent_id = 2352083 
> AND opration_create_dt >= {d'2018-02-06'}
> AND opration_create_dt <= {d'2019-09-01'}
>   AND oprationtype = 1
> )c,(
>   SELECT  count(*) as received_cnt
>   FROM adl.ent_backstage_apply 
>   WHERE  1=1   AND ent_id = 2352083 
> AND send_dt >= {d'2018-02-06'}
> AND send_dt <= {d'2019-09-01'}
> )d,(
>   SELECT  count(*) as download_cnt
>   FROM adl.ent_backstage_resume_download
>   WHERE  1=1   AND ent_id = 2352083 
> AND create_dt >= {d'2018-02-06'}
> AND create_dt <= {d'2019-09-01'}
> )e,(
>   SELECT  count(*) as work_cnt
>   FROM adl.ent_backstage_work
>   WHERE  1=1   AND ent_id = 2352083 
> AND work_create_dt >= {d'2018-02-06'}
> AND work_create_dt <= {d'2019-09-01'}
>   AND isdisplay = 1
> )f 
>  UNION ALL SELECT 
>   case when c.login_cnt is null then 0 else c.login_cnt end as login_cnt, 
>   case when f.work_cnt  is null then 0 else f.work_cnt  end as work_cnt, 
>   case when d.received_cnt is null then 0 else d.received_cnt end as received_cnt, 
>   case when e.download_cnt is null then 0 else e.download_cnt end as download_cnt, 
>   case when a.ent_view_cnt is null then 0 else a.ent_view_cnt end as ent_view_cnt, 
>   case when b.work_view_cnt is null then 0 else b.work_view_cnt end as work_view_cnt
> FROM( 
>   SELECT count(*) as ent_view_cnt 
>   FROM adl.ent_backstage_entview 
>   WHERE  1=1   AND ent_id = 2352083 
> AND create_dt >= {d'2017-02-06'}
> AND create_dt <= {d'2018-02-05'}
> )a, (
>   SELECT count(*) as work_view_cnt 
>   FROM adl.ent_backstage_workview
>   WHERE  1=1   AND ent_id = 2352083 
> AND create_dt >= {d'2017-02-06'}
> AND create_dt <= {d'2018-02-05'}
> )b, (
>   SELECT count(*) as login_cnt
>   FROM adl.ent_backstage_opration
>   WHERE  1=1   AND ent_id = 2352083 
> AND opration_create_dt >= {d'2017-02-06'}
> AND opration_create_dt <= {d'2018-02-05'}
>   AND oprationtype = 1
> )c,(
>   SELECT  count(*) as received_cnt
>   FROM adl.ent_backstage_apply 
>   WHERE  1=1   AND ent_id = 2352083 
> AND send_dt >= {d'2017-02-06'}
> AND send_dt <= {d'2018-02-05'}
> )d,(
>   SELECT  count(*) as download_cnt
>   FROM adl.ent_backstage_resume_download
>   WHERE  1=1   AND ent_id = 2352083 
> AND create_dt >= {d'2017-02-06'}
> AND create_dt <= {d'2018-02-05'}
> )e,(
>   SELECT  count(*) as work_cnt
>   FROM adl.ent_backstage_work
>   WHERE  1=1   AND ent_id = 2352083 
> AND work_create_dt >= {d'2017-02-06'}
> AND work_create_dt <= {d'2018-02-05'}
>   AND isdisplay = 1
> )f 



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