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https://issues.apache.org/jira/browse/FLINK-21701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17304628#comment-17304628
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Shengkai Fang commented on FLINK-21701:
---------------------------------------

[~xiangtao] Please make a try.

>From my side, my suggestions as follow.
 - What value to reset?
 -- If the key is defined in the YAML file, e.g. sql-client.default.yaml and 
flink-conf.yaml, reset the key the value in the YAML file. We have already 
stores this key value in the {{DefaultContext}};
 -- If the key is not defined in the YAML , please remove it from the 
configuration;

 - Compatibility.
 -- We have already deprecated the YAML file and introduced a util named 
{{YamlConfigUtils}}. Please use this if {{setSessionProperty}} doesn't 
satfisify your requirement.

> Support "RESET key" statement in the SQL Client
> -----------------------------------------------
>
>                 Key: FLINK-21701
>                 URL: https://issues.apache.org/jira/browse/FLINK-21701
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Client
>    Affects Versions: 1.13.0
>            Reporter: Shengkai Fang
>            Priority: Major
>              Labels: starter
>
> Allow to reset the specified key by input 
> {code:java}
> // code placeholder
> RESET table.planner.type;{code}



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