【Laravel】マイグレーションでシーケンスを作成する方法！

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

class CreateYourTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        DB::statement('CREATE SEQUENCE your_table_id_seq START 1 INCREMENT 1');
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        DB::statement('DROP SEQUENCE IF EXISTS your_table_id_seq');
    }
}

$ php artisan migrate