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Posted to issues@kylin.apache.org by "Xiaoxiang Yu (Jira)" <ji...@apache.org> on 2023/03/29 06:47:00 UTC
[jira] [Resolved] (KYLIN-5279) Default null collation for Kylin5.0 sqls should be null-last for ASC order and null-first for DESC order.
[ https://issues.apache.org/jira/browse/KYLIN-5279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiaoxiang Yu resolved KYLIN-5279.
---------------------------------
Resolution: Fixed
> Default null collation for Kylin5.0 sqls should be null-last for ASC order and null-first for DESC order.
> ---------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-5279
> URL: https://issues.apache.org/jira/browse/KYLIN-5279
> Project: Kylin
> Issue Type: Bug
> Components: Query Engine
> Reporter: Zhenning Zhang
> Assignee: Zhenning Zhang
> Priority: Major
> Fix For: 5.0-alpha
>
> Attachments: image-2022-10-20-15-12-12-967.png
>
>
> according to pgsql: [https://www.postgresql.org/docs/current/queries-order.html]
> "By default, null values sort as if larger than any non-null value; that is, {{NULLS FIRST}} is the default for {{DESC}} order, and {{NULLS LAST}} otherwise."
> currently, the result is:
> !image-2022-10-20-15-12-12-967.png|width=1320,height=743!
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