add balance promotion shop promotion

db/migrate/20210325114688_create_recharge_promotions.rb

@@ -77,7 +77,7 @@ class CreateRechargePromotions < ActiveRecord::Migration
 
     add_column :balance_promotions, :max_total, :integer, :default=>0,:limit => 11
     add_column :balance_promotions, :depart, :integer, :null => false, :default=>0,:limit => 11
-    add_column :balance_promotions, :is_more, :boolean, :default=>0,:limit => 11
+    add_column :balance_promotions, :is_more, :boolean, :default=>0,:limit => 4
 
 
   end