qimall/console/migrations/M240726015927ReserveOrderAddAttrId.php

<?php

namespace app\migrations;

use yii\db\Migration;

/**
 * Class M240726015927ReserveOrderAddAttrId
 */
class M240726015927ReserveOrderAddAttrId extends Migration
{
    /**
     * {@inheritdoc}
     */
    public function safeUp()
    {
        if (!\Yii::$app->db->schema->getTableSchema('qimall_order_reserve', true)->getColumn('attr_id')) {
            $this->execute("ALTER TABLE `qimall_order_reserve`
	ADD COLUMN `attr_id` INT(11) NOT NULL DEFAULT '0';");
        }
    }

    /**
     * {@inheritdoc}
     */
    public function safeDown()
    {
        echo "M240726015927ReserveOrderAddAttrId cannot be reverted.\n";

        return false;
    }

    /*
    // Use up()/down() to run migration code without a transaction.
    public function up()
    {

    }

    public function down()
    {
        echo "M240726015927ReserveOrderAddAttrId cannot be reverted.\n";

        return false;
    }
    */
}