Laravel 迁移 删除列

我需要从我的数据库表clients中删除列UserDomainName.

起初，我通过执行composer require doctrine/dbal和composer update来安装doctrine/dbal，如documentation中所述.

然后我创建了迁移，我想用它删除列:

php artisan make:migration remove_user_domain_name_from_clients --table=clients

我在down()方法中添加了Schema::dropColumn('UserDomainName');:

<?php

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

class RemoveDomainName extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('clients', function (Blueprint $table) {
            //
        });
    }

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

然而，我明白了

Migrating: 2017_08_22_135145_remove_user_domain_name_from_clients
Migrated:  2017_08_22_135145_remove_user_domain_name_from_clients

after executing php artisan migrate but no Column is dropped. If I execute it again I get Nothing to migrate.