[jira] [Created] (SPARK-27974) Add built-in Aggregate Function: array_agg

["Yuming Wang (JIRA)" <ji...@apache.org>]

Yuming Wang created SPARK-27974:
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             Summary: Add built-in Aggregate Function: array_agg
                 Key: SPARK-27974
                 URL: https://issues.apache.org/jira/browse/SPARK-27974
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Yuming Wang


||Function||Argument Type(s)||Return Type||Partial Mode||Description||
|{{array_agg(_{{expression}}_)}}|any non-array type|array of the argument type|No|input values, including nulls, concatenated into an array|
|{{array_agg(_{{expression}}_)}}|any array type|same as argument data type|No|input arrays concatenated into array of one higher dimension (inputs must all have same dimensionality, and cannot be empty or NULL)|

https://www.postgresql.org/docs/11/functions-aggregate.html

Other DBs:
https://docs.teradata.com/reader/kmuOwjp1zEYg98JsB8fu_A/Xffi_w_BZeSoaXg6Fd76Qw



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