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https://issues.apache.org/jira/browse/PHOENIX-4315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xinyi Yan reassigned PHOENIX-4315:
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Assignee: Xinyi Yan
Currently, COALESCE supports only 2 arguments.
For instance, the GREATEST(expr1, expr2) is supported but GREATEST(expr1,
expr2, expr3, ...) is not. Only implemented GREATEST for now, but if the list
of arguments uses cases are needed from the open source community, We can do
the optimization later.
If everyone is ok with this approach, I will create another patch for Least
feature.
:)
> function Greatest/Least
> -----------------------
>
> Key: PHOENIX-4315
> URL: https://issues.apache.org/jira/browse/PHOENIX-4315
> Project: Phoenix
> Issue Type: New Feature
> Reporter: Ethan Wang
> Assignee: Xinyi Yan
> Priority: Major
> Attachments: PHOENIX-4315.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Resolve as the greatest value among a collection of projections.
> e.g.,
> Select greatest(A, B) from table
> Select greatest(1,2)
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