baoshi-was/database/migrations/2021_12_21_161432_change_delivery_appointment_table.php

<?php

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

class ChangeDeliveryAppointmentTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('delivery_appointment_cars', function (Blueprint $table) {
            $table->timestamp("unloaded_at")->nullable()->comment("卸货完成时间");
        });
    }

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