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https://issues.apache.org/jira/browse/SPARK-28065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17263187#comment-17263187
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jiaan.geng commented on SPARK-28065:
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After investigation, it is found that most databases require it to be a
positive integer greater than 0.
> ntile only accepting positive (>0) values
> -----------------------------------------
>
> Key: SPARK-28065
> URL: https://issues.apache.org/jira/browse/SPARK-28065
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Dylan Guedes
> Priority: Major
>
> Currently, Spark does not accept null as an input for `ntile`, or zero,
> however Postgres supports it.
> Example:
> {code:sql}
> SELECT ntile(NULL) OVER (ORDER BY ten, four), ten, four FROM tenk1 LIMIT 2;
> {code}
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