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Replace Filter: Boolean(false) with EmptyRelation #3864

@andygrove

Description

@andygrove

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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