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https://issues.apache.org/jira/browse/IMPALA-10766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-10766 started by liuyao.
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> 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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