使用方法 // scenario is set as a property $model = new User; $model->scenario = User::SCENARIO_SHOW; // scenario is set through configuration $model = new User(['scenario' => User::SCENARIO_SUBMIT]); 举例说明 <?php namespace app\models; use yii\base\Mode
1.为数据表添加一个新字段 Alter TABLE [dbo].[CustomerBackupConfig] Add [Stamp] [timestamp] NULL GO 2.为数据表添加两个新字段 , GO 3.为数据表删除一个字段 Alter Table [dbo].[tblOrder] Drop Column [CookieID] GO 4.修改数据表一个字段的定义 Alter Table [dbo].[tblOrder] Alter Column [CookieID] int not