hemall.terabimsoft.com.cn/database/migrations/2017_06_13_160452_create_jobs_table.php

<?php

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

class CreateJobsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        if (!Schema::hasTable('jobs')) {
            Schema::create('jobs', function (Blueprint $table) {
                $table->bigIncrements('id');
                $table->string('queue');
                $table->longText('payload');
                $table->tinyInteger('attempts')->unsigned();
                $table->unsignedInteger('reserved_at')->nullable();
                $table->unsignedInteger('available_at');
                $table->unsignedInteger('created_at');
                //$table->index(['queue', 'reserved_at'], 'index');
            });
        }
    }

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