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https://issues.apache.org/jira/browse/CALCITE-3816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17043204#comment-17043204
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Rui Wang commented on CALCITE-3816:
-----------------------------------
Actually I "re-find" this problem because I was still using 1.20.0. It's fixed
in 1.22.0.
So close this Jira.
> Initial the digest of RexRangeRef to avoid null string
> ------------------------------------------------------
>
> Key: CALCITE-3816
> URL: https://issues.apache.org/jira/browse/CALCITE-3816
> Project: Calcite
> Issue Type: Bug
> Reporter: Rui Wang
> Assignee: Rui Wang
> Priority: Major
> Attachments: RexRangeRef.png
>
>
> See the attached photo.
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