class Axiom::Optimizer::Algebra::Product::TableDeeRight

Optimize when right operand is a TABLE DEE

Public Instance Methods

optimizable?() click to toggle source

Test if the right operand is a TABLE DEE

@return [Boolean]

@api private

# File lib/axiom/optimizer/algebra/product.rb, line 41
def optimizable?
  right.header.empty? && !right.kind_of?(Axiom::Relation::Empty)
end
optimize() click to toggle source

A Product with a right TABLE DEE is equivalent to the left operand

@return [Relation]

@api private

# File lib/axiom/optimizer/algebra/product.rb, line 50
def optimize
  left
end