baoshi-was/database/migrations/2020_06_01_135008_change_package_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class ChangePackageTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('packages',function (Blueprint $table){
            $table->string('order_code')->nullable()->comment('订单号');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('packages',function (Blueprint $table){
            $table->dropColumn('order_code');
        });
    }
}