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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/08/06 13:21:00 UTC

[jira] [Updated] (HIVE-25404) Inserts inside merge statements are rewritten incorrectly for partitioned tables

     [ https://issues.apache.org/jira/browse/HIVE-25404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HIVE-25404:
----------------------------------
    Labels: pull-request-available  (was: )

> Inserts inside merge statements are rewritten incorrectly for partitioned tables
> --------------------------------------------------------------------------------
>
>                 Key: HIVE-25404
>                 URL: https://issues.apache.org/jira/browse/HIVE-25404
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> {code}
> drop table u;drop table t;
> create table t(value string default 'def') partitioned by (id integer);
> create table u(id integer);
> {code}
> #1 id&value specified
> rewritten
> {code}
> FROM
>   `default`.`t`
>   RIGHT OUTER JOIN
>   `default`.`u`
>   ON `t`.`id`=`u`.`id`
> INSERT INTO `default`.`t` (`id`,`value`) partition (`id`)    -- insert clause
>   SELECT `u`.`id`,'x'
>    WHERE `t`.`id` IS NULL
> {code}
> #2 when values is not specified
> {code}
> merge into t using u on t.id=u.id when not matched then insert (id) values (u.id);
> {code}
> rewritten query:
> {code}
> FROM
>   `default`.`t`
>   RIGHT OUTER JOIN
>   `default`.`u`
>   ON `t`.`id`=`u`.`id`
> INSERT INTO `default`.`t` (`id`) partition (`id`)    -- insert clause
>   SELECT `u`.`id`
>    WHERE `t`.`id` IS NULL
> {code}



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