[jira] [Work logged] (HIVE-26889) Implement array_join udf to concatenate the elements of an array with a specified delimiter

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

     [ https://issues.apache.org/jira/browse/HIVE-26889?focusedWorklogId=838508&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-838508 ]

ASF GitHub Bot logged work on HIVE-26889:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 11/Jan/23 03:52
            Start Date: 11/Jan/23 03:52
    Worklog Time Spent: 10m 
      Work Description: SourabhBadhya commented on code in PR #3896:
URL: https://github.com/apache/hive/pull/3896#discussion_r1066549750


##########
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/AbstractGenericUDFArrayBase.java:
##########
@@ -49,6 +52,12 @@ protected AbstractGenericUDFArrayBase(String functionName, int minArgCount, int
         this.minArgCount = minArgCount;
         this.maxArgCount = maxArgCount;
         this.outputCategory = outputCategory;
+        this.outputPrimitiveCategory = null;

Review Comment:
   This line seems unnecessary. Isnt this `null` by default since it is not initialized?





Issue Time Tracking
-------------------

    Worklog Id:     (was: 838508)
    Time Spent: 0.5h  (was: 20m)

> Implement array_join udf to concatenate the elements of an array with a specified delimiter
> -------------------------------------------------------------------------------------------
>
>                 Key: HIVE-26889
>                 URL: https://issues.apache.org/jira/browse/HIVE-26889
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Hive
>            Reporter: Taraka Rama Rao Lethavadla
>            Assignee: Taraka Rama Rao Lethavadla
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> *array_join(array, delimiter, replaceNull)* - concatenate the elements of an array with a specified delimiter
> Example:
> {noformat}
> > SELECT array_join(array(1, 2, 3,4), ',') FROM src LIMIT 1;
> 1,2,3,4
> > SELECT array_join(array(1, 2, NULL, 4), ',',':') FROM src LIMIT 1;
> 1,2,:,4{noformat}
> Returns NULL if array is null/empty



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