class Axiom::Optimizer::Relation::Operation::Combination

Abstract base class representing combinations of relations

Public Instance Methods

optimize() click to toggle source

Any relation combined with an empty relation is an empty relation

@return [Relation::Empty]

@api private

# File lib/axiom/optimizer/relation/operation/combination.rb, line 16
def optimize
  Axiom::Relation::Empty.new(operation.header)
end