Initial commit

db/migrate/20180516124235_improve_order_model.rb

@@ -0,0 +1,29 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+class ImproveOrderModel < ActiveRecord::Migration[4.2]
+  def change
+    remove_columns :orders, :sn, :done_at, :source
+    execute %[DELETE FROM orders WHERE ask IS NULL OR bid IS NULL]
+    change_column :orders, :bid, :integer, null: false
+    change_column :orders, :ask, :integer, null: false
+    change_column :orders, :market_id, :string, null: false, limit: 10
+    change_column_null :orders, :volume, false
+    change_column_null :orders, :origin_volume, false
+    change_column_null :orders, :state, false
+    change_column_null :orders, :type, false
+    change_column_null :orders, :member_id, false
+    change_column :orders, :created_at, :datetime, null: false, after: :trades_count
+    change_column :orders, :updated_at, :datetime, null: false, after: :created_at
+    change_column :orders, :ord_type, :string, null: false, limit: 30
+    change_column_null :orders, :locked, false
+    change_column_null :orders, :origin_locked, false
+    change_column_null :orders, :trades_count, false
+    change_column_default :orders, :locked, 0
+    change_column_default :orders, :origin_locked, 0
+    remove_index :orders, column: %i[market_id state]
+    remove_index :orders, column: %i[member_id state]
+    add_index :orders, %i[type state member_id]
+    add_index :orders, %i[type state market_id]
+  end
+end