Souke/console/migrations/m161206_080722_add_champs_username_commandeauto.php

<?php

use yii\db\Migration;
use yii\db\Schema;

class m161206_080722_add_champs_username_commandeauto extends Migration
{
    public function up()
    {
        $this->addColumn('commande_auto', 'username', Schema::TYPE_STRING) ;
    }

    public function down()
    {
        $this->dropColumn('commande_auto', 'username') ;
    }
}