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From "Dongjoon Hyun (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-28036) Support negative parameters at LEFT/RIGHT SQL functions
Date Mon, 29 Jul 2019 18:30:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-28036?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dongjoon Hyun updated SPARK-28036:
----------------------------------
    Summary: Support negative parameters at LEFT/RIGHT SQL functions  (was: Built-in udf left/right
has inconsistent behavior)

> Support negative parameters at LEFT/RIGHT SQL functions
> -------------------------------------------------------
>
>                 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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