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https://issues.apache.org/jira/browse/SPARK-31397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17079268#comment-17079268
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Rakesh Raushan commented on SPARK-31397:
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The same functionality can be achieved using to/from_json and performance will
be almost equivalent as well. So we do not need to implement this new function.
> Support json_arrayAgg
> ---------------------
>
> Key: SPARK-31397
> URL: https://issues.apache.org/jira/browse/SPARK-31397
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Rakesh Raushan
> Priority: Major
>
> Returns a JSON array by aggregating all the JSON arrays from a set of JSON
> arrays, or by aggregating the values of a Column.
> Some of the Databases supporting this aggregate function are:
> * MySQL
> * PostgreSQL
> * Maria_DB
> * Sqlite
> * IBM Db2
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