1 files changed, 10 insertions, 0 deletions
diff --git a/lib/arel/nodes/sum.rb b/lib/arel/nodes/sum.rb
index ecd66aba7a..d81455fa5f 100644
--- a/lib/arel/nodes/sum.rb
+++ b/lib/arel/nodes/sum.rb
@@ -7,6 +7,16 @@ module Arel
         @expressions = expr
         @alias       = aliaz
       end
+
+      def as aliaz
+        self.alias = SqlLiteral.new(aliaz)
+        self
+      end
+
+      def to_sql
+        viz = Visitors::ToSql.new Table.engine
+        viz.accept self
+      end
     end
   end
 end