danielhumanmod commented on issue #1627:
URL: 
https://github.com/apache/datafusion-ballista/issues/1627#issuecomment-4357217853

   > Cc [@danielhumanmod](https://github.com/danielhumanmod) now we have 
explain and analyse maybe we could support tree renderer there as well?
   
   Yeah, that sounds like a good improvement.
   
   One thing I am thinking is how users should request the tree format for 
`EXPLAIN` / `EXPLAIN ANALYZE`.
   
   One option is to extend the SQL syntax, for example:
   
   ```sql
   EXPLAIN (FORMAT TREE) SELECT ...
   EXPLAIN ANALYZE (FORMAT TREE) SELECT ...
   ```
   Another option is to use a session config:
   ```
   let config = SessionConfig::new_with_ballista()
       .set_str("ballista.explain.plan_format", "tree")...
   
   or from SQL:
   
   SET ballista.explain.plan_format = 'tree';
   ```
   The first option seems nicer from a user-facing SQL perspective, while the 
second one may be smaller to introduce on the Ballista side. I’d be curious 
what the community prefers here.


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