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Posted to issues@spark.apache.org by "Xiao Li (Jira)" <ji...@apache.org> on 2019/12/01 23:29:00 UTC

[jira] [Commented] (SPARK-29984) Add built-in Array Functions: array_ndims

    [ https://issues.apache.org/jira/browse/SPARK-29984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16985718#comment-16985718 ] 

Xiao Li commented on SPARK-29984:
---------------------------------

How useful is this function? Is PostgreSQL the only database that supports it?
[|https://issues.apache.org/jira/secure/AddComment!default.jspa?id=13270680]

> Add built-in Array Functions: array_ndims
> -----------------------------------------
>
>                 Key: SPARK-29984
>                 URL: https://issues.apache.org/jira/browse/SPARK-29984
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: jiaan.geng
>            Priority: Major
>
> |{{array_ndims}}{{(}}{{anyarray}}{{)}}|{{int}}|returns the number of dimensions of the array|{{array_ndims(ARRAY[[1,2,3], [4,5,6]])}}|{{2}}|
> [https://www.postgresql.org/docs/11/functions-array.html]



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