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https://issues.apache.org/jira/browse/FLINK-4189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15426671#comment-15426671
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ASF GitHub Bot commented on FLINK-4189:
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Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/2380
> Introduce symbols for internal use
> ----------------------------------
>
> Key: FLINK-4189
> URL: https://issues.apache.org/jira/browse/FLINK-4189
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> Currently we are using integer values to pass Calcite SQL symbols down to
> code generation. This causes problems like in FLINK-4068. We should support
> symbols internally.
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