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Posted to issues-all@impala.apache.org by "liuyao (Jira)" <ji...@apache.org> on 2021/07/08 02:34:00 UTC

[jira] [Work started] (IMPALA-10766) Better selectivity for = (equals)

     [ https://issues.apache.org/jira/browse/IMPALA-10766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on IMPALA-10766 started by liuyao.
---------------------------------------
> Better selectivity for = (equals)
> ---------------------------------
>
>                 Key: IMPALA-10766
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10766
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Frontend
>    Affects Versions: Impala 3.4.0
>            Reporter: liuyao
>            Assignee: liuyao
>            Priority: Major
>
> When calculating the selectivity of =, the null value is not considered. For =, the null values are always false



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