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https://issues.apache.org/jira/browse/FLINK-7572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153421#comment-16153421
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ASF GitHub Bot commented on FLINK-7572:
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Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/4640
Thanks for the PR @sunjincheng121. I'll merge this.
> Improve TableSchema ValidationException message.
> ------------------------------------------------
>
> Key: FLINK-7572
> URL: https://issues.apache.org/jira/browse/FLINK-7572
> Project: Flink
> Issue Type: Improvement
> Reporter: sunjincheng
> Assignee: sunjincheng
>
> When sql is very complicated(e.g.: more than 100+ tables), the following
> exception information is very confusing:
> {code}
> org.apache.flink.table.api.TableException: Table column names must be unique.
> at org.apache.flink.table.api.TableSchema.<init>(TableSchema.scala:36)
> {code}
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