qimall/console/migrations/M240819150512TabExpressModifyColumnExpressNo.php

<?php

namespace app\migrations;

use yii\db\Migration;

/**
 * 修改express_no字段长度
 */
class M240819150512TabExpressModifyColumnExpressNo extends Migration
{
    /**
     * {@inheritdoc}
     */
    public function safeUp()
    {
        $sql = <<<SQL
            ALTER TABLE `qimall_order_express` 
            MODIFY COLUMN `express_no` varchar(255) CHARACTER SET utf8mb4 
            COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT '运单编号' AFTER `express_name`;
SQL;
        $this->execute($sql);
    }

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