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https://issues.apache.org/jira/browse/CALCITE-3599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16994940#comment-16994940
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Rui Wang commented on CALCITE-3599:
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+1 on this JIRA!
> Initial the digest of RexRangeRef to avoid null string
> ------------------------------------------------------
>
> Key: CALCITE-3599
> URL: https://issues.apache.org/jira/browse/CALCITE-3599
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Chunwei Lei
> Assignee: Chunwei Lei
> Priority: Minor
> Labels: pull-request-available
> Attachments: image-2019-12-12-23-49-18-977.png
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently, the digest of {{RexRangeRef}} is always {{null}} which is
> confusing when we try to debug the code. I suggest changing it to a more
> meaningful string such as {{offset(0)}}.
> !image-2019-12-12-23-49-18-977.png|width=529,height=234!
>
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