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https://issues.apache.org/jira/browse/KUDU-1532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15417736#comment-15417736
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Todd Lipcon commented on KUDU-1532:
-----------------------------------
You can find some syntax for update from select in this mailing list post:
https://groups.google.com/forum/m/#!topic/kudu-user/v63sFwUfn5g
Explicit UPSERT support is tracked in this Impala JIRA:
https://issues.cloudera.org/browse/IMPALA-3725
> Update for Bulk doesn't work / need for upsert
> ------------------------------------------------
>
> Key: KUDU-1532
> URL: https://issues.apache.org/jira/browse/KUDU-1532
> Project: Kudu
> Issue Type: Bug
> Environment: Impala
> Reporter: Qutiba
>
> Written in Kudu documentation "Updating In Bulk"
> You can update in bulk using the same approaches outlined in Inserting In
> Bulk.
> Upsert for Bulk doesn't work in impala for the following two Kudu tables:
> ---------------
> update Ktable1 set
> select * from Ktable2;
> ----------------
> or
> -----------------
> update Ktable1
> select * from Ktable2;
> -----------------
> Also no examples for applying update in Bulk.
> Also it is more professional to have upsert statement in Impala.
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