Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/14580
Not sure which RDBMS are supporting `Using Outer Join`. `NULL` generated by
outer joins are removed. This sounds a little bit strange. After all, `NULL`
also has a meaning.
In the plan (by EXPLAIN), it is not easy to know this is a regular outer
join or using outer join. That is why I think we should introduce a new join
type. At least, users can easily know they are triggering using outer join.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
