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https://issues.apache.org/jira/browse/FLINK-2985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15121048#comment-15121048
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Fabian Hueske commented on FLINK-2985:
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Hi [~sbcd90], thanks for your interest to contribute!
We are currently refactoring the Table API (see FLINK-3221).
I'd suggest to wait with this issue until the refactoring is completed.
> Allow different field names for unionAll() in Table API
> -------------------------------------------------------
>
> Key: FLINK-2985
> URL: https://issues.apache.org/jira/browse/FLINK-2985
> Project: Flink
> Issue Type: Improvement
> Components: Table API
> Reporter: Timo Walther
> Priority: Minor
>
> The recently merged `unionAll` operator checks if the field names of the left
> and right side are equal. Actually, this is not necessary. The union operator
> in SQL checks only the types and uses the names of left side.
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