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https://issues.apache.org/jira/browse/PHOENIX-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shuxiong Ye updated PHOENIX-2019:
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Attachment: 0001-PHOENIX-2019-Implement-Build-in-math-function-ln-and.patch
> Implement Build-in math function ln and log
> -------------------------------------------
>
> Key: PHOENIX-2019
> URL: https://issues.apache.org/jira/browse/PHOENIX-2019
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Shuxiong Ye
> Assignee: Shuxiong Ye
> Attachments:
> 0001-PHOENIX-2019-Implement-Build-in-math-function-ln-and.patch
>
>
> Implement math build-in function, ln and log. Example show as below:
> ln(dp) natural logarithm ln(2.0) 0.693147180559945
> log(dp) base 10 logarithm log(100.0) 2
> log(b, x) numeric logarithm to base b log(2.0, 64.0) 6.0000000000
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