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https://issues.apache.org/jira/browse/CALCITE-5898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17751472#comment-17751472
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hongyu guo commented on CALCITE-5898:
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Do we need to add a UUID type as the return value of uuid() in Calcite, or just
use VARCHAR_36 as the return type?
By the way, Spark also supports the uuid function with a return type of string
> Add UUID function (enabled in Presto library)
> ---------------------------------------------
>
> Key: CALCITE-5898
> URL: https://issues.apache.org/jira/browse/CALCITE-5898
> Project: Calcite
> Issue Type: Sub-task
> Components: core
> Affects Versions: 1.35.0
> Reporter: Runkang He
> Priority: Major
>
> Add UUID function (enabled in Presto library)
> UUID: Returns a pseudo randomly generated
> [UUID|https://prestodb.io/docs/current/language/types.html#uuid-type] (type
> 4).
> See more details in
> [Presto|https://prestodb.io/docs/current/functions/uuid.html] doc.
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