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https://issues.apache.org/jira/browse/HIVE-19770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17768567#comment-17768567
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Stamatis Zampetakis commented on HIVE-19770:
--------------------------------------------
The missing lineage information due to constant folding reported [in a comment
above|https://issues.apache.org/jira/browse/HIVE-19770?focusedCommentId=16498684&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16498684]
is tracked under HIVE-27726.
> Support for CBO for queries with multiple same columns in select
> ----------------------------------------------------------------
>
> Key: HIVE-19770
> URL: https://issues.apache.org/jira/browse/HIVE-19770
> Project: Hive
> Issue Type: Improvement
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Priority: Major
> Fix For: 4.0.0-alpha-1
>
> Attachments: HIVE-19770.1.patch, HIVE-19770.2.patch,
> HIVE-19770.3.patch, HIVE-19770.4.patch, HIVE-19770.5.patch,
> HIVE-19770.6.patch, HIVE-19770.7.patch, HIVE-19770.8.patch
>
>
> Currently queries such as {code:sql} select a,a from t1 where b > 10 {code}
> are not supported for CBO.
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