Make sure we check that the column we want to rename is present before trying to rename it. And thus throw the correct AR exception type rather than letting the DB fail.

Author: h-lame

lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -522,8 +522,12 @@ def add_column(table_name, column_name, type, options = {})
         execute(add_column_sql)
       end
 
-      def rename_column(table, column, new_column_name)
-        execute "EXEC sp_rename '#{table}.#{column}', '#{new_column_name}'"
+      def rename_column(table_name, column_name, new_column_name)
+        if columns(table_name).find{|c| c.name.to_s == column_name.to_s}
+          execute "EXEC sp_rename '#{table_name}.#{column_name}', '#{new_column_name}'"
+        else
+          raise ActiveRecordError, "No such column: #{table_name}.#{column_name}"
+        end
       end
 
       def change_column(table_name, column_name, type, options = {}) #:nodoc: