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https://issues.apache.org/jira/browse/FLINK-8301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16302661#comment-16302661
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ASF GitHub Bot commented on FLINK-8301:
---------------------------------------

Github user Xpray commented on the issue:

    https://github.com/apache/flink/pull/5203
  
    Thanks for @sunjincheng121 , I found another bug due to Expression Reduce 
and fixed it, please have a look!


> Support Unicode in codegen for SQL && TableAPI
> ----------------------------------------------
>
>                 Key: FLINK-8301
>                 URL: https://issues.apache.org/jira/browse/FLINK-8301
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Ruidong Li
>            Assignee: Ruidong Li
>
> The current code generation do not support Unicode, "\u0001" will be 
> generated to "\\u0001", function call like concat(str, "\u0001") will lead to 
> wrong result.
> This issue intend to handle char/varchar literal correctly, some examples 
> followed as below.
> literal: '\u0001abc'    ->   codegen:  "\u0001abc"
> literal: '\u0022\'         ->   codegen:  "\"\\"



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