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https://issues.apache.org/jira/browse/CALCITE-1495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-1495.
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Resolution: Fixed
Fix Version/s: 1.11.0
Fixed in http://git-wip-us.apache.org/repos/asf/calcite/commit/565d6392.
> SemiJoinRule should not apply to RIGHT and FULL JOIN
> ----------------------------------------------------
>
> Key: CALCITE-1495
> URL: https://issues.apache.org/jira/browse/CALCITE-1495
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Reporter: Vineet Garg
> Assignee: Julian Hyde
> Fix For: 1.11.0
>
>
> SemiJoinRule should not apply to RIGHT and FULL JOIN; and it should strip
> LEFT JOIN once it has disovered that the rows from the right input are unique.
> Original description:
> bq. For IN and EXISTS sub-queries Calcite currently generates plan consisting
> of GROUP BY on inner table followed by INNER JOIN with outer table. Such
> cases could be converted using this rule to use SEMI-JOIN to make it more
> efficient.
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