baoshi-was/database/migrations/2021_06_02_114506_change_storages_table.php

<?php

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

class ChangeStoragesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::dropIfExists('storages');
        Schema::create('storages', function (Blueprint $table) {
            $table->id();
            $table->bigInteger("station_id")->index()->nullable()->comment("外键库位");
            $table->bigInteger("material_box_id")->nullable()->index()->comment("外键料箱");
            $table->bigInteger("commodity_id")->nullable()->index()->comment("外键商品");
            $table->integer("amount")->default(0)->comment("数量");
            $table->tinyInteger("status")->default(0)->comment("状态");
            $table->timestamps();
            $table->unique(["station_id","material_box_id","commodity_id"]);
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('storages');
        Schema::create('storages', function (Blueprint $table) {
            $table->id();
            $table->bigInteger("material_box_id")->index()->comment("外键料箱");
            $table->bigInteger("commodity_id")->nullable()->index()->comment("外键商品");
            $table->integer("amount")->default(0)->comment("数量");
            $table->timestamps();
        });
    }
}