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https://issues.apache.org/jira/browse/FLINK-31362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17817717#comment-17817717
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Sergey Nuyanzin commented on FLINK-31362:
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Calcite upgrade itself is pretty complex task that's why it was already
discussed and suggested to go version by version rather than big bang
https://issues.apache.org/jira/browse/FLINK-27998?focusedCommentId=17597797&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-17597797
this is the main concern
I fear we can not just downgrade it easily, there is already functionality
merged which depends on Calcite 1.31.0 e.g. FLINK-24024
> Upgrade to Calcite version to 1.33.0
> ------------------------------------
>
> Key: FLINK-31362
> URL: https://issues.apache.org/jira/browse/FLINK-31362
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API
> Reporter: WenJun Min
> Assignee: Sergey Nuyanzin
> Priority: Major
> Labels: pull-request-available
>
> In Calcite 1.33.0, C-style escape strings have been supported. We could
> leverage it to enhance our string literals usage.
> issue: https://issues.apache.org/jira/browse/CALCITE-5305
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