[jira] [Assigned] (SPARK-47483) Add support for aggregation and join operations on arrays of collated strings

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-47483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot reassigned SPARK-47483:
--------------------------------------

    Assignee: Apache Spark

> Add support for aggregation and join operations on arrays of collated strings
> -----------------------------------------------------------------------------
>
>                 Key: SPARK-47483
>                 URL: https://issues.apache.org/jira/browse/SPARK-47483
>             Project: Spark
>          Issue Type: Task
>          Components: SQL
>    Affects Versions: 4.0.0
>            Reporter: Nikola Mandic
>            Assignee: Apache Spark
>            Priority: Major
>              Labels: pull-request-available
>
> Example of aggregation sequence:
> {code:java}
> create table t(a array<string collate utf8_binary_lcase>) using parquet;
> insert into t(a) values(array('a' collate utf8_binary_lcase));
> insert into t(a) values(array('A' collate utf8_binary_lcase));
> select distinct a from t; {code}
> Example of join sequence:
> {code:java}
> create table l(a array<string collate utf8_binary_lcase>) using parquet;
> create table r(a array<string collate utf8_binary_lcase>) using parquet;
> insert into l(a) values(array('a' collate utf8_binary_lcase));
> insert into r(a) values(array('A' collate utf8_binary_lcase));
> select * from l join r where l.a = r.a; {code}
> Both runs should yield one row since the arrays are considered equal.



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