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Posted to issues@hive.apache.org by "Vineet Garg (JIRA)" <ji...@apache.org> on 2016/12/04 05:09:58 UTC

[jira] [Commented] (HIVE-15192) Use Calcite to de-correlate and plan subqueries

    [ https://issues.apache.org/jira/browse/HIVE-15192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15719342#comment-15719342 ] 

Vineet Garg commented on HIVE-15192:
------------------------------------

Work in progress @ https://github.com/vineetgarg02/hive/tree/HIVE-15192

> Use Calcite to de-correlate and plan subqueries
> -----------------------------------------------
>
>                 Key: HIVE-15192
>                 URL: https://issues.apache.org/jira/browse/HIVE-15192
>             Project: Hive
>          Issue Type: Task
>          Components: Logical Optimizer
>            Reporter: Vineet Garg
>            Assignee: Vineet Garg
>              Labels: sub-query
>         Attachments: HIVE-15192.2.patch, HIVE-15192.3.patch, HIVE-15192.patch
>
>
> Currently support of subqueries is limited [Link to original spec | https://issues.apache.org/jira/secure/attachment/12614003/SubQuerySpec.pdf].
> Using Calcite to plan and de-correlate subqueries will help Hive get rid of these limitations.



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