[GitHub] [druid] jihoonson commented on issue #4349: [Proposal] Improve Handling of Nulls in Druid

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

jihoonson commented on issue #4349:
URL: https://github.com/apache/druid/issues/4349#issuecomment-841093401


   > in my case(1 of 2 cases): i have this column which only contain null values (for now). after ingesting it to druid, the column is missing (the datasource doesn't have that column). so my query in some app to druid using that column ended up as an error (no column). and when some other segment ingested with the column contains non null values, the datasource finally have that column (even though only 1 segment have that non null value)
   
   This is the SQL layer issue that it cannot make a query plan with a missing column. Druid query engine treats the missing column and the column of null values the same.


-- 
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: commits-unsubscribe@druid.apache.org
For additional commands, e-mail: commits-help@druid.apache.org