[jira] [Comment Edited] (SPARK-28382) Array Functions: unnest

["Kent Yao (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-28382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17003457#comment-17003457 ] 

Kent Yao edited comment on SPARK-28382 at 12/26/19 3:54 AM:
------------------------------------------------------------

Ping [~hyukjin.kwon] I closed my pull PR, but I'm not the creator of this ticket. I'd leave this to you. thanks. FYI, the unnest implementation in my pr is based on Postgres but the unnest seems different from systems to systems.


was (Author: qin yao):
Ping [~hyukjin.kwon] I closed my pull PR, but I'm not the creator of this ticket. I'd leave this to you. thanks. FYI, the unnest implementation is based on Postgres but the unnest seems different from systems to systems.

> Array Functions: unnest
> -----------------------
>
>                 Key: SPARK-28382
>                 URL: https://issues.apache.org/jira/browse/SPARK-28382
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Yuming Wang
>            Priority: Major
>
> ||Function||Return Type||Description||Example||Result||
> |{{unnest}}({{anyarray}})|set of  anyelement|expand an array to a set of rows|unnest(ARRAY[1,2])|1
> 2
> (2 rows)|
>  
> https://www.postgresql.org/docs/11/functions-array.html
>  



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