migrations/2017_08_18_025442_create_commodity_brand_table.php
public function up()
    {
        Schema::create("commodity_brands", function (Blueprint $table) {
            $table->increments("id");
            $table->string("name", 32)->comment("品牌名称");
            $table->smallInteger('sort', false, true)->default(0)->comment('排序');
            $table->string('description')->default('')->comment('品牌备注');
            $table->string('cover')->default('')->comment('品牌封面');

            $table->dateTime("created_at");
            $table->dateTime("updated_at");
            $table->softDeletes();

            $table->index(['name', 'sort']);
        });
    }
public function up()
    {
        Schema::create("commodity_brands", function (Blueprint $table) {
            $table->increments("id");
            $table->string("name", 32)->comment("品牌名称");
            $table->smallInteger('sort', false, true)->default(0)->comment('排序');
            $table->string('description')->default('')->comment('品牌备注');
            $table->string('cover')->default('')->comment('品牌封面');

            $table->dateTime("created_at");
            $table->dateTime("updated_at");
            $table->softDeletes();

            $table->index(['name', 'sort']);
        });
    }
Run the migrations.

@return void