1 files changed, 19 insertions, 0 deletions
diff --git a/lib/active_relation/relations/alias.rb b/lib/active_relation/relations/alias.rb
new file mode 100644
index 0000000000..97950ea5b3
--- /dev/null
+++ b/lib/active_relation/relations/alias.rb
@@ -0,0 +1,19 @@
+module ActiveRelation
+  module Relations
+    class Alias < Compound
+      attr_reader :alias
+  
+      def initialize(relation, aliaz)
+        @relation, @alias = relation, aliaz
+      end
+  
+      def ==(other)
+        relation == other.relation and self.alias == other.alias
+      end
+      
+      def to_sql(options = {})
+        super + " AS #{@alias}"
+      end
+    end
+  end
+end
+\ No newline at end of file