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https://issues.apache.org/jira/browse/CALCITE-7089?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhen Chen resolved CALCITE-7089.
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Fix Version/s: 1.41.0
Resolution: Fixed
> Implement a rule for converting a RIGHT JOIN to a LEFT JOIN
> -----------------------------------------------------------
>
> Key: CALCITE-7089
> URL: https://issues.apache.org/jira/browse/CALCITE-7089
> Project: Calcite
> Issue Type: Improvement
> Affects Versions: 1.40.0
> Reporter: Zhen Chen
> Assignee: YuhanLiu
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.41.0
>
>
> This is because SQLite versions before 3.39.0 do not support RIGHT/FULL JOIN.
> Currently, the rule for converting FULL JOIN to LEFT + RIGHT JOIN has been
> implemented. There is a lack of a rule for converting RIGHT JOIN to LEFT JOIN
> (which may also be used in other scenarios). This rule can be implemented
> with the help of the static method in JoinCommuteRule. The reason for not
> using JoinCommuteRule directly is that it supports both LEFT JOIN to RIGHT
> JOIN and RIGHT JOIN to LEFTJOIN, and there is no way to control only RIGHT
> JOIN to LEFT JOIN.
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