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https://issues.apache.org/jira/browse/SPARK-47483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk reassigned SPARK-47483:
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Assignee: Nikola Mandic
> 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: Nikola Mandic
> 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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