[jira] [Commented] (FLINK-19749) document error

["Jark Wu (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-19749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17218260#comment-17218260 ] 

Jark Wu commented on FLINK-19749:
---------------------------------

I would suggest "if add columns name is the same" => "if the added column name is the same".

Feel free to open pull request. 

> document error
> --------------
>
>                 Key: FLINK-19749
>                 URL: https://issues.apache.org/jira/browse/FLINK-19749
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: appleyuchi
>            Priority: Major
>
> in this [link|https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/tableApi.html] there's a "description":
> *Performs a field add operation. Existing fields will be replaced if add columns name is the same as the existing column name. Moreover, if the added fields have duplicate field name, then the last one is used.*
> Two point:
> ①" add columns name "->" added column's name"
> ②"if the added fields have duplicate field name",
> what's the example that has two duplicate field name?
> Could you modify them?
> They're a little misleading/unclear.



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