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https://issues.apache.org/jira/browse/FLINK-14055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16944595#comment-16944595
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Leo Zhang commented on FLINK-14055:
-----------------------------------

Yeah. I totally agree with you [~twalthr] that this sub-task may be oversized. 
And it should be reasonable to fire a new issue to support loading external 
user jars. It will be useful and handy for the end-users in many cases besides 
 Table API&SQL. I set up this goal in FLINK-14319 and please discuss it there 
sir. [~twalthr]. 
 

> Add advanced function DDL syntax "USING JAR/FILE/ACHIVE"
> --------------------------------------------------------
>
>                 Key: FLINK-14055
>                 URL: https://issues.apache.org/jira/browse/FLINK-14055
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / API
>            Reporter: Bowen Li
>            Assignee: Zhenqiu Huang
>            Priority: Major
>
> As FLINK-7151 adds basic function DDL to Flink, this ticket is to support 
> dynamically loading functions from external source in function DDL with 
> advanced syntax like 
>  
> {code:java}
> CREATE FUNCTION func_name as class_name USING JAR/FILE/ACHIEVE 'xxx' [, 
> JAR/FILE/ACHIEVE 'yyy'] ;
> {code}



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