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https://issues.apache.org/jira/browse/IMPALA-10677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17361044#comment-17361044
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Aman Sinha commented on IMPALA-10677:
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[~liuyao] This is a duplicate of IMPALA-7560 (original) and IMPALA-8039
(duplicate). There's more analysis in those JIRAs about the selectivity
computation so it would be good to close this one as a dup and assign
IMPALA-7560 to yourself. What do you think ?
> Set selectivity of "!="
> -----------------------
>
> Key: IMPALA-10677
> URL: https://issues.apache.org/jira/browse/IMPALA-10677
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Affects Versions: Impala 3.4.0
> Reporter: liuyao
> Assignee: liuyao
> Priority: Major
> Fix For: Impala 4.0
>
>
> The selectivity of "!=" is not set.
> For example, "SELECT * FROM Cola! = 1"
> The selectivity of "! = " is -1
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