2 files changed, 8 insertions, 7 deletions
diff --git a/lib/arel/attributes.rb b/lib/arel/attributes.rb
index a7fb00293b..92cc041f83 100644
--- a/lib/arel/attributes.rb
+++ b/lib/arel/attributes.rb
@@ -13,7 +13,7 @@ module Arel
       when :date, :datetime, :timestamp, :time then Time
       when :boolean                            then Boolean
       else
-        raise NotImplementedError, "Column type `#{column.type}` is not currently handled"
+        Undefined
       end
     end
   end
diff --git a/lib/arel/attributes/attribute.rb b/lib/arel/attributes/attribute.rb
index e027a65a74..5cbe194b41 100644
--- a/lib/arel/attributes/attribute.rb
+++ b/lib/arel/attributes/attribute.rb
@@ -5,12 +5,13 @@ module Arel
       include Arel::Predications
     end
 
-    class String  < Attribute; end
-    class Time    < Attribute; end
-    class Boolean < Attribute; end
-    class Decimal < Attribute; end
-    class Float   < Attribute; end
-    class Integer < Attribute; end
+    class String    < Attribute; end
+    class Time      < Attribute; end
+    class Boolean   < Attribute; end
+    class Decimal   < Attribute; end
+    class Float     < Attribute; end
+    class Integer   < Attribute; end
+    class Undefined < Attribute; end
   end
 
   Attribute = Attributes::Attribute