created a temporary old nodes table to add version

db/migrate/014_create_temp_old_nodes.rb

@@ -0,0 +1,24 @@
+class CreateTempOldNodes < ActiveRecord::Migration
+  def self.up
+
+    create_table "temp_nodes", myisam_table do |t|
+      t.column "id",        :bigint,  :limit => 64
+      t.column "version",    :bigint, :limit => 20, :default => 0, :null => false
+      t.column "latitude",  :double
+      t.column "longitude", :double
+      t.column "user_id",   :bigint,  :limit => 20
+      t.column "visible",   :boolean
+      t.column "timestamp", :datetime
+      t.column "tile", :integer, :null => false
+    end
+
+  add_primary_key "temp_nodes", ["id", "version"] 
+  add_index "temp_nodes", ["timestamp"], :name => "temp_nodes_timestamp_idx"
+  add_index "temp_nodes", ["tile"], :name => "temp_nodes_tile_idx"
+
+  end
+
+  def self.down
+    drop_table :temp_nodes
+  end
+end