adding "as" and to_sql to count nodes

1 files changed, 12 insertions, 1 deletions

diff --git a/lib/arel/nodes/count.rb b/lib/arel/nodes/count.rb
index b7c4b60948..1222a791bb 100644
--- a/lib/arel/nodes/count.rb
+++ b/lib/arel/nodes/count.rb
@@ -1,11 +1,22 @@
 module Arel
   module Nodes
     class Count
-      attr_accessor :expressions, :distinct
+      attr_accessor :expressions, :distinct, :alias
 
       def initialize expr, distinct = false
         @expressions = expr
         @distinct    = distinct
+        @alias       = nil
+      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