SQLServer: don't report limits for unsupported field types. Closes #2835.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2982 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* SQLServer: don't report limits for unsupported field types.  #2835 [Ryan Tomayko]
+
 * Include the Enumerable module in ActiveRecord::Errors.  [Rick Bradley <rick@rickbradley.com>]
 
 * Add :group option, correspond to GROUP BY, to the find method and to the has_many association.  #2818 [rubyonrails@atyp.de]

activerecord/lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -52,6 +52,8 @@ module ActiveRecord
         @identity = is_identity
         @is_special = sql_type =~ /text|ntext|image/i ? true : false
         @scale = scale_value
+        # SQL Server only supports limits on *char and float types
+        @limit = nil unless @type == :float or @type == :string
       end
 
       def simplified_type(field_type)