qimall/console/migrations/M241114014502AddUnshippedNumColumnToOrderDetailTable.php

<?php

namespace app\migrations;

use yii\db\Migration;

/**
 * Handles adding columns to table `{{%order_detail}}`.
 */
class M241114014502AddUnshippedNumColumnToOrderDetailTable extends Migration
{
    /**
     * {@inheritdoc}
     */
    public function safeUp()
    {
        $sql = <<<SQL
ALTER TABLE `qimall_order_detail` 
ADD COLUMN `unshipped_num` int UNSIGNED NOT NULL DEFAULT 0 COMMENT '未发货数量';

UPDATE `qimall_order_detail` SET `unshipped_num` = `num` WHERE `shipping_status` = 0;
SQL;
        $this->execute($sql);
    }

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