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Posted to issues@kylin.apache.org by "Jiale He (Jira)" <ji...@apache.org> on 2022/12/01 09:44:00 UTC
[jira] [Updated] (KYLIN-5322) The number of records in the query result is counted and the comparison is abnormal
[ https://issues.apache.org/jira/browse/KYLIN-5322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jiale He updated KYLIN-5322:
----------------------------
Description:
select count 一个空的查询结果是空
!image-2022-12-01-17-40-13-510.png!
只要是空的layout,直接返回一个空的结果
!image-2022-12-01-17-40-52-969.png!
因此即使再加上一个 count 仍然返回为空的结果。
h1. Fix Design
当是 emptyLayout 的情况时,直接放行,在生成 spark 计划的时候,create 一个 空的 dataFrame,走 spark 去计算结果。
!https://kyligence.feishu.cn/space/api/box/stream/download/asynccode/?code=NTNmMTBmYjg2ZWIxNGM2YTYxN2QxNzRlYTM5NWQyMjVfbG5VT011eFVhUTJ5Q0pMbVB5OHdmZlBjaTdJOUJwSDBfVG9rZW46Ym94Y251d2RnSFI5N3B6bm5zeWNjUWgydDdiXzE2Njk4ODc3NDg6MTY2OTg5MTM0OF9WNA! #
查询语句中带有 AGG 的情况放行
#
不带有 AGG 的直接返回
was:
select count 一个空的查询结果是空
!image-2022-12-01-17-40-13-510.png!
只要是空的layout,直接返回一个空的结果
!image-2022-12-01-17-40-52-969.png!
因此即使再加上一个 count 仍然返回为空的结果。
> The number of records in the query result is counted and the comparison is abnormal
> -----------------------------------------------------------------------------------
>
> Key: KYLIN-5322
> URL: https://issues.apache.org/jira/browse/KYLIN-5322
> Project: Kylin
> Issue Type: Bug
> Components: Query Engine
> Reporter: Jiale He
> Priority: Major
> Fix For: 5.0-alpha
>
> Attachments: image-2022-12-01-17-40-13-510.png, image-2022-12-01-17-40-52-969.png
>
>
> select count 一个空的查询结果是空
> !image-2022-12-01-17-40-13-510.png!
>
> 只要是空的layout,直接返回一个空的结果
>
> !image-2022-12-01-17-40-52-969.png!
> 因此即使再加上一个 count 仍然返回为空的结果。
>
>
> h1. Fix Design
>
> 当是 emptyLayout 的情况时,直接放行,在生成 spark 计划的时候,create 一个 空的 dataFrame,走 spark 去计算结果。
> !https://kyligence.feishu.cn/space/api/box/stream/download/asynccode/?code=NTNmMTBmYjg2ZWIxNGM2YTYxN2QxNzRlYTM5NWQyMjVfbG5VT011eFVhUTJ5Q0pMbVB5OHdmZlBjaTdJOUJwSDBfVG9rZW46Ym94Y251d2RnSFI5N3B6bm5zeWNjUWgydDdiXzE2Njk4ODc3NDg6MTY2OTg5MTM0OF9WNA! #
> 查询语句中带有 AGG 的情况放行
> #
> 不带有 AGG 的直接返回
>
>
>
>
>
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