1 files changed, 51 insertions, 0 deletions
diff --git a/activerecord/lib/arel/nodes/binary.rb b/activerecord/lib/arel/nodes/binary.rb
new file mode 100644
index 0000000000..a86d4e4696
--- /dev/null
+++ b/activerecord/lib/arel/nodes/binary.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+module Arel
+  module Nodes
+    class Binary < Arel::Nodes::NodeExpression
+      attr_accessor :left, :right
+
+      def initialize left, right
+        super()
+        @left  = left
+        @right = right
+      end
+
+      def initialize_copy other
+        super
+        @left  = @left.clone if @left
+        @right = @right.clone if @right
+      end
+
+      def hash
+        [self.class, @left, @right].hash
+      end
+
+      def eql? other
+        self.class == other.class &&
+          self.left == other.left &&
+          self.right == other.right
+      end
+      alias :== :eql?
+    end
+
+    %w{
+      As
+      Assignment
+      Between
+      GreaterThan
+      GreaterThanOrEqual
+      Join
+      LessThan
+      LessThanOrEqual
+      NotEqual
+      NotIn
+      Or
+      Union
+      UnionAll
+      Intersect
+      Except
+    }.each do |name|
+      const_set name, Class.new(Binary)
+    end
+  end
+end