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https://issues.apache.org/jira/browse/FLINK-29458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17618116#comment-17618116
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ZuoYan commented on FLINK-29458:
--------------------------------
[~jark]
It has been modified. Please refer to [GitHub Pull Request
#20983|https://github.com/apache/flink/pull/20983]
> When two tables have the same field, do not specify the table name,Exception
> will be thrown：SqlValidatorException :Column 'currency' is ambiguous
> -------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-29458
> URL: https://issues.apache.org/jira/browse/FLINK-29458
> Project: Flink
> Issue Type: Improvement
> Components: Documentation, Table SQL / API
> Affects Versions: 1.14.4
> Reporter: ZuoYan
> Assignee: ZuoYan
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2022-09-28-21-00-01-302.png,
> image-2022-09-28-21-00-09-054.png, image-2022-09-28-21-00-22-733.png
>
>
> When two tables are join, the two tables have the same field. When querying
> select, an exception will be thrown if the table name is not specified
> exception content
> Column 'currency' is ambiguous。
> !image-2022-09-28-21-00-22-733.png!
>
> !image-2022-09-28-21-00-01-302.png!
> !image-2022-09-28-21-00-09-054.png!
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