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https://issues.apache.org/jira/browse/FLINK-32699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17750530#comment-17750530
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Aitozi commented on FLINK-32699:
--------------------------------

Hi [~jackylau], sorry for not notice this ticket, I have opened another ticket 
https://issues.apache.org/jira/projects/FLINK/issues/FLINK-32711 about this, 
could you help also take a review for that ?

> select typeof(proctime()); throw exception in sql-client
> --------------------------------------------------------
>
>                 Key: FLINK-32699
>                 URL: https://issues.apache.org/jira/browse/FLINK-32699
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / Planner
>    Affects Versions: 1.18.0
>            Reporter: Jacky Lau
>            Priority: Major
>             Fix For: 1.18.0
>
>
> {code:java}
> Flink SQL> select typeof(proctime()); 
>  
> [ERROR] Could not execute SQL statement. Reason: 
> org.apache.flink.table.planner.codegen.CodeGenException: Mismatch of 
> function's argument data type 'TIMESTAMP_LTZ(3) NOT NULL' and actual argument 
> type 'TIMESTAMP_LTZ(3)'
>  {code}



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