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https://issues.apache.org/jira/browse/CALCITE-7016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17955451#comment-17955451
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Zhen Chen commented on CALCITE-7016:
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[~asolimando] As I mentioned above, RelNode constructed using relFen cannot be
converted into standard SQL in all cases. So I have not thought of a good way
to implement your suggestion. I have looked for a long time and no one has made
suggestions on this jira. If you think this approach is not appropriate, I will
close this PR first. If others have a better way, he can continue this jira.
> Sql resources should not be included in XML when using relFn in
> RelOptRulesTest testing
> ---------------------------------------------------------------------------------------
>
> Key: CALCITE-7016
> URL: https://issues.apache.org/jira/browse/CALCITE-7016
> Project: Calcite
> Issue Type: Improvement
> Reporter: Zhen Chen
> Assignee: Zhen Chen
> Priority: Minor
> Labels: pull-request-available
>
> Use relFn to construct a plan for rule validation, and SQL resources should
> not be included in the result file(RelOptRulesTest.xml). If SQL can be used
> to generate plans, it is not recommended to use relFn for construction.
> Otherwise, it may lead to incorrect mapping between sql and planBefore.
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