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https://issues.apache.org/jira/browse/HIVE-28908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18079448#comment-18079448
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Butao Zhang commented on HIVE-28908:
------------------------------------

[~krisztiankasa] 

Sure, feel free to pick up this task. Thank you for your interest in this 
feature!

Additionally, this JIRA and HIVE-29279 have some overlap in terms of code 
development, as both aim to support the `cat.db.tbl` table reference syntax in 
Hive. You can combine the development efforts with HIVE-29279.

Currently, Hive uses the `db.tbl.metatbl` reference syntax to query Iceberg 
metadata tables, which conflicts with the introduction of the `cat.db.tbl` 
syntax. Therefore, we may need to make an incompatible change regarding the 
querying of Iceberg metadata tables. Refer to:  
[https://github.com/apache/hive/pull/6252#discussion_r2652627443]  
and  
[https://docs.google.com/document/d/1SX8OPd_KdBuynMr-D8AZ7V5tKkoUDKFterUSjeRpOW0/edit?disco=AAAB2qdl4d4]
   

We can continue discussing this incompatible change on the community dev 
mailing list:  
[https://lists.apache.org/thread/g9hg52hkk4lv596ylkggrvgcd4kj70pb] 

Of course, if you can come up with any compatible changes that don't break the 
current functionality, that would be best.

 

Thanks

> From clause supports catalog.db.tbl pattern
> -------------------------------------------
>
>                 Key: HIVE-28908
>                 URL: https://issues.apache.org/jira/browse/HIVE-28908
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor
>            Reporter: Butao Zhang
>            Priority: Major
>              Labels: pull-request-available
>
> For example, we can query a iceberg table by the{color:#FF0000} 
> catalog.db.tbl{color} pattern:
> {code:java}
> // The catalog of hive can be the HMS native catalog or other external 
> catalog(rest)
> select * from hive.testicedb.testice;{code}
>  
> For the iceberg metadata table, we can use the{color:#FF0000} 
> catalog.db.tbl.meta{color} pattern
> {code:java}
> select * from hive.testicedb.testice.history;{code}



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