danielhumanmod commented on PR #1309:
URL:
https://github.com/apache/datafusion-ballista/pull/1309#issuecomment-3531493946
> I agree with you let's finish explain first.
>
> I had a quick look at internals but I never finished my investigation how
to add callback in a better way, will try to do it before you finish explain
Hey @milenkovicm I have updated our `EXPLAIN` implementation based on our
prev discussion. Basically I follow this exec rewrite:
```
Previous:
ExplainExec
After:
CoalescePartitionsExec
└─ ProjectionExec: expr=[list_type -> plan_type, list_plan -> plan]
└─ UnnestExec
└─ ProjectionExec: expr=[list_type, list_plan]
└─ PlaceholderRowExec
```
which produces a table like this:
```
| plan_type | plan |
|------------------|-----------------|
| logical_plan | logical_txt |
| physical_plan | physical_txt |
| distributed_plan | distributed_txt |
```
Appreciate any feedback on this! And I’m also happy to help with the
callback part — just let me know the direction or any context I should be aware
of, and I can dig into it as well.
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