andygrove opened a new issue, #3864:
URL: https://github.com/apache/arrow-datafusion/issues/3864
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
I have a query that looks like this after optimization:
```
Union
Projection
...
Projection
Filter: Boolean(false)
Aggregate
Inner Join
Inner Join
```
**Describe the solution you'd like**
Remove everything under the `Filter` that is always false and replace with
`EmptyRelation` so that we avoid executing the join and aggregate.
**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features
you've considered.
**Additional context**
Add any other context or screenshots about the feature request here.
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