[jira] [Comment Edited] (SPARK-28036) Built-in udf left/right has inconsistent behavior

["Shivu Sondur (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-28036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16872045#comment-16872045 ] 

Shivu Sondur edited comment on SPARK-28036 at 6/25/19 8:30 AM:
---------------------------------------------------------------

[~yumwang]
 select left('ahoj', 2), right('ahoj', 2);
 use without '-' sign, it will work fine,

i tested in latest spark

 


was (Author: shivusondur@gmail.com):
[~yumwang]
select left('ahoj', 2), right('ahoj', 2);
use with '-' sign, it will work fine,

i tested in latest spark

 

> Built-in udf left/right has inconsistent behavior
> -------------------------------------------------
>
>                 Key: SPARK-28036
>                 URL: https://issues.apache.org/jira/browse/SPARK-28036
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Yuming Wang
>            Priority: Major
>
> PostgreSQL:
> {code:sql}
> postgres=# select left('ahoj', -2), right('ahoj', -2);
>  left | right 
> ------+-------
>  ah   | oj
> (1 row)
> {code}
> Spark SQL:
> {code:sql}
> spark-sql> select left('ahoj', -2), right('ahoj', -2);
> spark-sql>
> {code}



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