qimall/addons/GroupBuy/console/migrations/M250814115215AddIndexToGroupBuyOrderTable.php

<?php

namespace addons\GroupBuy\console\migrations;

use yii\db\Migration;

/**
 * Class M250814115215AddIndexToGroupBuyOrderTable
 */
class M250814115215AddIndexToGroupBuyOrderTable extends Migration
{
    /**
     * {@inheritdoc}
     */
    public function safeUp()
    {
        $sql = <<<SQL
ALTER TABLE `qimall_addons_group_buy_order` 
ADD INDEX `oi_index` (`order_id`, `is_free`);
SQL;

        $this->execute($sql);
    }

    /**
     * {@inheritdoc}
     */
    public function safeDown()
    {
        return false;
    }

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

    }

    public function down()
    {
        echo "M250814115215AddIndexToGroupBuyOrderTable cannot be reverted.\n";

        return false;
    }
    */
}