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Contents
# encoding: utf-8 require 'spec_helper' describe Algebra::Projection do context 'remove attributes in predicate' do subject { restriction.project([ :name ]) } let(:left) { Relation.new([ [ :id, Integer ] ], (1..100).map { |n| [ n ] }) } let(:right) { Relation.new([ [ :name, String ] ], [ [ 'Dan Kubb' ], [ 'John Doe' ], [ 'Jane Doe' ] ]) } let(:relation) { left * right } let(:restriction) { relation.restrict { |r| r[:id].gte(1).and(r[:id].lte(10)).and(r[:name].eq('Dan Kubb')) } } it 'returns a relation with a single tuple' do should == [ [ 'Dan Kubb' ] ] end end end
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
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veritas-0.0.4 | spec/integration/veritas/algebra/projection_spec.rb |