[GitHub] [spark] maropu commented on pull request #29311: [SPARK-32501][SQL] Convert null to "null" in structs, maps and arrays while casting to strings

[GitBox <gi...@apache.org>]

maropu commented on pull request #29311:
URL: https://github.com/apache/spark/pull/29311#issuecomment-667427163


   Looks a reasonable change. Actually, hive does so;
   ```
   hive> select named_struct('a', 1, 'b', null);
   {"a":1,"b":null}
   
   hive> select array(1, 2, null);
   [1,2,null]
   
   hive> select map('a', 1, 'b', null);
   {"a":1,"b":null}
   ```


----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

For queries about this service, please contact Infrastructure at:
users@infra.apache.org



---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscribe@spark.apache.org
For additional commands, e-mail: reviews-help@spark.apache.org