Yii+MYSQL锁表防止并发情况下重复数据的方法

lock tables user read;//读锁定表unlock tables;//解锁lock tables user read local;//本地读锁定表，其他线程的insert未被阻塞，update操作被阻塞

lock tables user write;//写锁定表unlock tables;//解锁

/*** 当日单项内容状态*/public function getPointAready($marke,$dayTime){  $model = SysRun::model()->findByAttributes(array('syr_marking'=>$marke,'syr_daytime'=>$dayTime));  if(empty($model)){    //表写锁定    Yii::app()->db->createCommand()->setText("lock tables {{sys_run}} WRITE")->execute();    $model = new SysRun();    $model->syr_marking = $marke;    $model->syr_daytime = $dayTime;    $model->syr_val = 0;    $model->syr_subval = 0;    $model->save();    //表解锁    Yii::app()->db->createCommand()->setText("unlock tables")->execute();  }  return $model;}