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https://issues.apache.org/jira/browse/FLINK-20873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17619201#comment-17619201
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godfrey he commented on FLINK-20873:
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This ticket can be closed since "Upgrade Calcite version to 1.32" has been
created (FLINK-29319)
> Upgrade Calcite version to 1.27
> -------------------------------
>
> Key: FLINK-20873
> URL: https://issues.apache.org/jira/browse/FLINK-20873
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API, Table SQL / Planner
> Reporter: Jark Wu
> Priority: Major
> Labels: pull-request-available
>
> The following files should be removed from the Flink code base during an
> upgrade:
> - org.apache.calcite.rex.RexSimplify
> - org.apache.calcite.sql.SqlMatchRecognize
> - org.apache.calcite.sql.SqlTableRef
> - org.apache.calcite.sql2rel.RelDecorrelator
> - org.apache.flink.table.planner.functions.sql.SqlJsonObjectFunction (added
> in FLINK-16203)
> - Adopt calcite's behaviour and add SQL tests once
> [https://github.com/apache/calcite/pull/2555] is merged, (check FLINK-24576 )
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