Make event_type column as smallint and move it to the end of the table

db/migrate/20170522194603_create_geo_push_events.rb

@@ -4,8 +4,8 @@ class CreateGeoPushEvents < ActiveRecord::Migration
   def change
     create_table :geo_push_events do |t|
       t.references :project, index: true, foreign_key: { on_delete: :cascade }, null: false
-      t.integer :event_type, index: true, null: false
       t.datetime :created_at, null: false
+      t.integer :event_type, limit: 2, index: true, null: false
     end
   end
 end

db/schema.rb

@@ -530,8 +530,8 @@ ActiveRecord::Schema.define(version: 20170602003304) do
 
   create_table "geo_push_events", force: :cascade do |t|
     t.integer "project_id", null: false
-    t.integer "event_type", null: false
     t.datetime "created_at", null: false
+    t.integer "event_type", limit: 2, null: false
   end
 
   add_index "geo_push_events", ["event_type"], name: "index_geo_push_events_on_event_type", using: :btree