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https://issues.apache.org/jira/browse/DERBY-4074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12701474#action_12701474
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Knut Anders Hatlen commented on DERBY-4074:
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For the record, the SQL standard does allow the suggested syntax, see ISO/IEC
9075-2:2003 - 14.12 <set clause list>.
> Allow UPDATE TABLE SET (col1,col2) = (SELECT a,b FROM ...) syntax
> -----------------------------------------------------------------
>
> Key: DERBY-4074
> URL: https://issues.apache.org/jira/browse/DERBY-4074
> Project: Derby
> Issue Type: New Feature
> Reporter: Aaron Digulla
>
> Please extend the UPDATE statement to allow this syntax:
> UPDATE table SET (col1,col2) = (SELECT a,b FROM othertable)
> This is especially useful when I need to group in the SELECT.
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