1 files changed, 24 insertions, 0 deletions
diff --git a/lib/arel/nodes/binary.rb b/lib/arel/nodes/binary.rb
index cfa75909c5..0d02554199 100644
--- a/lib/arel/nodes/binary.rb
+++ b/lib/arel/nodes/binary.rb
@@ -7,6 +7,30 @@ module Arel
         @left  = left
         @right = right
       end
+
+      def initialize_copy other
+        super
+        @left  = @left.clone if @left
+        @right = @right.clone if @right
+      end
+    end
+
+    %w{
+      As
+      Assignment
+      Between
+      DoesNotMatch
+      GreaterThan
+      GreaterThanOrEqual
+      Join
+      LessThan
+      LessThanOrEqual
+      Matches
+      NotEqual
+      NotIn
+      Or
+    }.each do |name|
+      const_set name, Class.new(Binary)
     end
   end
 end