[jira] [Updated] (SPARK-29737) Concat for array in Spark SQL is not the one in PostgreSQL but array_cat

["Takeshi Yamamuro (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-29737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Takeshi Yamamuro updated SPARK-29737:
-------------------------------------
    Parent Issue: SPARK-30375  (was: SPARK-27764)

> Concat for array in Spark SQL is not the one in PostgreSQL but array_cat
> ------------------------------------------------------------------------
>
>                 Key: SPARK-29737
>                 URL: https://issues.apache.org/jira/browse/SPARK-29737
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Kent Yao
>            Priority: Major
>
> {code:sql}
> postgres=# select array_cat(array[1,2], array[2]);
>  array_cat
> -----------
>  {1,2,2}
> (1 row)
> postgres=# select concat(array[1,2], array[2]);
>   concat
> ----------
>  {1,2}{2}
> (1 row)
> {code}
> {code:sql}
> // Some comments here
> spark-sql> select concat(array(1,2), array(2));
> [1,2,2]
> {code}



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