baoshi-was/database/migrations/2020_10_19_113042_create_logistic_timings_table.php

<?php

use App\City;
use App\Logistic;
use App\LogisticTiming;
use App\Province;
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateLogisticTimingsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('logistic_timings', function (Blueprint $table) {
            $table->id();
            $table->integer('logistic_id')->index()->comment('承运商');
            $table->integer('to_province_id')->index()->comment('目的省');
            $table->integer('to_city_id')->index()->nullable()->comment('目的市');
            $table->integer('days_at_working')->nullable()->comment('工作日用日');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('logistic_timings');
    }
}