baoshi-was/database/migrations/2020_07_14_104613_add_waybills_deliver_at.php

<?php

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

class AddWaybillsDeliverAt extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('waybills',function (Blueprint $table){
            $table->timestamp('deliver_at')->nullable()->comment('发货时间');
        });
    }

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