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https://issues.apache.org/jira/browse/FLINK-6574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16013614#comment-16013614
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ASF GitHub Bot commented on FLINK-6574:
---------------------------------------
Github user KurtYoung commented on a diff in the pull request:
https://github.com/apache/flink/pull/3913#discussion_r116919339
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/exceptions.scala
---
@@ -128,7 +128,7 @@ case class DatabaseNotExistException(
* @param db database name
* @param cause the cause
*/
-case class DatabaseAlreadyExistException(
+case class CatalogAlreadyExistException(
--- End diff --
Same above.
> 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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