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Posted to issues@spark.apache.org by "Yuming Wang (JIRA)" <ji...@apache.org> on 2019/06/10 00:58:00 UTC
[jira] [Commented] (SPARK-27930) Add built-in Math Function: RANDOM
[ https://issues.apache.org/jira/browse/SPARK-27930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16859628#comment-16859628 ]
Yuming Wang commented on SPARK-27930:
-------------------------------------
Workaround:
{code:sql}
select reflect("java.lang.Math", "random")
{code}
> Add built-in Math Function: RANDOM
> ----------------------------------
>
> Key: SPARK-27930
> URL: https://issues.apache.org/jira/browse/SPARK-27930
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Priority: Major
>
> The RANDOM function generates a random value between 0.0 and 1.0. Syntax:
> {code:sql}
> RANDOM()
> {code}
> More details:
> https://www.postgresql.org/docs/12/functions-math.html
> Other DBs:
> https://docs.aws.amazon.com/redshift/latest/dg/r_RANDOM.html
> https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/SQLReferenceManual/Functions/Mathematical/RANDOM.htm?tocpath=SQL%20Reference%20Manual%7CSQL%20Functions%7CMathematical%20Functions%7C_____24
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