baoshi-was/database/migrations/2021_03_30_104348_change_discharge_auth_name.php

<?php

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

class ChangeDischargeAuthName extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('discharge_tasks',function (Blueprint $table){
            $table->integer('warehouse_id')->comment('仓库')->default(null);
            $table->bigInteger('facilitator_id')->comment('装卸队')->default(null)->change();
        });

    }

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