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https://issues.apache.org/jira/browse/PHOENIX-1516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14256630#comment-14256630
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Lars Hofhansl commented on PHOENIX-1516:
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And this does not work right: {{upsert into t select pk, rand() from t}}. That 
produces the same value for each inserted row.
{{upsert into t1 select pk, rand() from t}} works correctly, though.

> Add RANDOM built-in function
> ----------------------------
>
>                 Key: PHOENIX-1516
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1516
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>         Attachments: 1516-v2.txt, 1516-v3.txt, 1516.txt
>
>
> I often find it useful to generate some rows with random data.
> Here's a simple RANDOM() function that we could use for that.



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