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https://issues.apache.org/jira/browse/FLINK-6574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16017130#comment-16017130
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ASF GitHub Bot commented on FLINK-6574:
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Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/3913
Thanks for the update @haohui and the review @KurtYoung.
Will merge this PR.
> Support nested catalogs in ExternalCatalog
> ------------------------------------------
>
> Key: FLINK-6574
> URL: https://issues.apache.org/jira/browse/FLINK-6574
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: Haohui Mai
> Assignee: Haohui Mai
> Priority: Critical
> Fix For: 1.3.0
>
>
> We found out that the current external catalog requires three layers of
> references for any tables. For example, the SQL would look like the following
> when referencing external table:
> {noformat}
> SELECT * FROM catalog.db.table
> {noformat}
> It would be great to support only two layers of indirections which is closer
> to many of the deployment on Presto / Hive today.
> {noformat}
> SELECT * FROM db.table
> {noformat}
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