hemall.terabimsoft.com.cn/database/migrations/2020_04_28_072741_create_update_auth.php

<?php

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

class CreateUpdateAuth extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        if (!Schema::hasTable('yz_update_auth')) {
            Schema::create('yz_update_auth', function (Blueprint $table) {
                $table->integer('id', true);
                $table->string('code', 50)->nullable();
                $table->integer('created_at')->nullable();
                $table->integer('updated_at')->nullable();
                $table->integer('deleted_at')->nullable();
            });
        }
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        //
    }
}