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https://issues.apache.org/jira/browse/CALCITE-5906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17754338#comment-17754338
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Julian Hyde commented on CALCITE-5906:
--------------------------------------
The PR looks good. Can you rebase it onto main (which now contains CALCITE-5895
and CALCITE-5916). Also change the summary (and commit message, and
descriptions of test cases) so that it reads like a feature request, something
like "JDBC adapter should generate TABLESAMPLE".
> Add the visit(Sample e) implementation in RelToSqlConverter
> -------------------------------------------------------------
>
> Key: CALCITE-5906
> URL: https://issues.apache.org/jira/browse/CALCITE-5906
> Project: Calcite
> Issue Type: Bug
> Reporter: LakeShen
> Assignee: LakeShen
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.36.0
>
> Attachments: image-2023-08-08-20-16-27-188.png,
> image-2023-08-08-20-19-01-269.png
>
>
> Currently in the RelToSqlConverter class, there is no visit method to handle
> the Sample RelNode.If a SQL plan has Sample RelNode, RelToSqlConverter will
> throw a AssertionError like this:
> {code:java}
> java.lang.AssertionError: Need to implement
> org.apache.calcite.rel.core.Sample
> {code}
> This will cause the Sample RelNode plan to fail to translate to the
> corresponding dialect.
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