[jira] [Resolved] (SPARK-25638) Convert structs to CSV strings

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-25638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-25638.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0

Issue resolved by pull request 22626
[https://github.com/apache/spark/pull/22626]

> Convert structs to CSV strings
> ------------------------------
>
>                 Key: SPARK-25638
>                 URL: https://issues.apache.org/jira/browse/SPARK-25638
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Maxim Gekk
>            Assignee: Maxim Gekk
>            Priority: Minor
>             Fix For: 3.0.0
>
>
> New function to_csv() should convert a column of StructType to a column with CSV string. The function should accept the CSV options as CSV data source does. API should expose the following methods:
> {code:scala}
> def to_csv(e: Column, options: Map[String, String]): Column
> {code}
> and for Python/R:
> {code:scala}
> def to_csv(e: Column, options: java.util.Map[String, String]): Column
> {code}
> Here is an example of usage:
> {code:sql}
> select to_csv(named_struct('time', to_timestamp('2015-08-26', 'yyyy-MM-dd')), map('timestampFormat', 'dd/MM/yyyy'));
> {code}
> {code}
> 26/08/2015
> {code}



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