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https://issues.apache.org/jira/browse/FLINK-10438?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-10438:
-----------------------------------
Labels: auto-deprioritized-major stale-minor (was:
auto-deprioritized-major)
I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help
the community manage its development. I see this issues has been marked as
Minor but is unassigned and neither itself nor its Sub-Tasks have been updated
for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is
still Minor, please either assign yourself or give an update. Afterwards,
please remove the label or in 7 days the issue will be deprioritized.
> Built in functions should document the returned types
> -----------------------------------------------------
>
> Key: FLINK-10438
> URL: https://issues.apache.org/jira/browse/FLINK-10438
> Project: Flink
> Issue Type: Improvement
> Components: Documentation, Table SQL / API
> Affects Versions: 1.6.1
> Reporter: Piotr Nowojski
> Priority: Minor
> Labels: auto-deprioritized-major, stale-minor
>
> As it is now, user have no idea to know whether the result of the operation
> is accurate or not.
> For example {{POWER(4, 2)}} or {{POWER(2.5, )}} could return exact results
> (with proper {{DECIMAL}} support), while it seems like now they are silently
> returning approximated result (because of {{DOUBLE}} arithmetic). Same
> applies to other arithmetic functions, like {{COS SIN ATAN LOG ...}}.
> Such behaviour should be documented. In some cases documenting the argument
> types also might be important.
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