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https://issues.apache.org/jira/browse/CALCITE-3296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16916095#comment-16916095
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Juhwan Kim commented on CALCITE-3296:
-------------------------------------
[~julianhyde] Yes. Here is the link for the
commit(https://github.com/apache/calcite/commit/11116f6d03bca7cd97d151033c5d82f24394e229).
> Decorrelator gives empty result after decorrelating sort rel with null offset
> and fetch
> ---------------------------------------------------------------------------------------
>
> Key: CALCITE-3296
> URL: https://issues.apache.org/jira/browse/CALCITE-3296
> Project: Calcite
> Issue Type: Bug
> Reporter: Juhwan Kim
> Assignee: Juhwan Kim
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> It seems like I introduced a bug with the recent decorrelator patch. Sort rel
> with null offset and fetch would end up becoming an empty value since
> decorrelator would call sortLimit builder with 0 limit and 0 offset. It
> should pass negative values to builder when values are null.
> https://github.com/apache/calcite/blob/e863294ccfbed9dd520c999f75ed0bbe03f9fb1d/core/src/main/java/org/apache/calcite/sql2rel/RelDecorrelator.java#L423
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