Yii1 的數據庫操作整理

1、根據條件查詢一個集合

$objectResult=Post::model()->findAll($condition,$params);
$objectResult=Post::model()->findAll("username=:name",array(":name"=>$username));
$objectResult=RepairItem::model()->findAll("orderno=:orderno and orderpostid=:orderpostid",array(":orderno"=>$orderInfo['orderno'],':orderpostid'=>$orderInfo['orderpostid']));

$infoArr = NewsList::model()->findAll("status = '1' ORDER BY postid DESC limit 10 ");
 

2、根據主鍵查詢一個集合,可以使用多個主鍵 findAllByPk

$objectResult=Post::model()->findAllByPk($postIDs,$condition,$params);
$objectResult=Post::model()->findAllByPk($postid,"name like :name and age=:age",array(':name'=>$name,'age'=>$age));
$objectResult=Post::model()->findAllByPk(array(1,2));
 

3、根據條件查詢一個集合,可以是多個條件,把條件放到數組里面 findAllByAttributes

$objectResult=Post::model()->findAllByAttributes($attributes,$condition,$params);
$objectResult=Post::model()->findAllByAttributes(array('username'=>'jack'));
 

4、根據SQL語句查詢一個數組 findAllBySql

$arrResult=Post::model()->findAllBySql($sql,$params);
$arrResult=Post::model()->findAllBySql("select * from tbl_post where username like :name",array(':name'=>'?%'));

5、根據主鍵查詢出一個對象 eg：findByPk(1);

$arrResult=Post::model()->findByPk($postID,$condition,$params);
$arrResult=Post::model()->findByPk(1);

6、根據條件查詢出一組數據,【可能是多個,但是他只返回第一行數據】

$arrRow=Post::model()->find($condition,$params);
$arrRow=Post::model()->find('username=:name',array(':name'=>'jack'));

7、根據條件查詢一組數據,【可以是多個條件,把條件放到數組里面,查詢的也是第一條數據】

$objectResult=Post::model()->findByAttributes($attributes,$condition,$params);
$objectResult=Post::model()->findByAttributes(array('username'=>'objectResult'));
 

8、根據SQL語句查詢一組數據,【查詢的也是第一條數據】

$objectResult=Post::model()->findBySql($sql,$params);
$objectResult=Post::model()->findBySql("select * from objectResult where username=:name",array(':name'=>'objectResult'));
 

9、通過CDbCriteria類find查詢出一個對象 

$criteria=new CDbCriteria; 
$criteria->select='username'; // 限制顯示哪些字段 
$criteria->condition='username=:username';     //一個查詢條件用aCondition.多條件用addCondition
$criteria->params=array(":username=>'jack'");
$criteria->order = "postsort DESC";
$criteria->limit = "3";
$post=Post::model()->find($criteria);
 

10、多條件查詢的語句

$criteria = new CDbCriteria;     
$criteria->addCondition("postid=1"); //等同於 where postid = 1 
$criteria->addInCondition('postid', array(1,2,3,4,5)); //等同於 where postid IN (1,2,3,4,5,); 
$criteria->addNotInCondition('postid', array(1,2,3,4,5));//等同於 NOT IN (1,2,3,4,5,)
$criteria->addCondition('postid=1','OR');//等同於 OR而非AND 
$criteria->addSearchCondition('username', 'jack');//等同於 where name like '%jack%' 
$criteria->addBetweenCondition('postid', 1, 4);// 等同於 between 1 and 4
$criteria->compare('postid', 1);    //根據你的參數自動處理成addCondition或者addInCondition.
$criteria->compare('postid', array(1,2,3));   //數組就會調用addInCondition 
 
 
$criteria->select = 'postid,parentid,name'; //限制顯示哪些字段 
$criteria->join = 'xxx'; //連接表 
$criteria->with = 'xxx'; //調用relations  
$criteria->limit = 10;    //取1條數據，如果小於0，則不作處理 
$criteria->offset = 1;   //兩條合並起來，則表示 limit 10 offset 1,或者代表了。limit 1,10 
$criteria->order = 'xxx DESC,XXX ASC' ;//排序條件 
$criteria->group = 'group 條件'; 
$criteria->having = 'having 條件 '; 
$criteria->distinct = FALSE; //是否唯一查詢

三、查詢個數,判斷查詢是否有結果


根據一個條件查詢一個集合有多少條記錄,返回一個int型數字
$intCount=Post::model()->count($condition,$params);
$intCount=Post::model()->count("username=:name",array(":name"=>$username));
 
根據SQL語句查詢一個集合有多少條記錄,返回一個int型數字
$intCount=Post::model()->countBySql($sql,$params);
$intCount=Post::model()->countBySql("select * from objectResult where username=:name",array(':name'=>'objectResult'));
 
根據一個條件查詢查詢得到的數組有沒有數據,有數據返回一個true,否則沒有找到
$boolExists=Post::model()->exists($condition,$params);
$boolExist=Post::model()->exists("name=:name",array(":name"=>$username));

四、添加的方法

$objectPost = new Post;       
$objectPost->username = $username;
$objectPost->password = $password;
或許
$objectPost->attributes = $arrNewData;

if($objectPost->save()){
    $intPostId= $objectPost->primaryKey; //生成主鍵id
    echo "添加成功";
}else{
    echo "添加失敗";
}

五、修改的方法


Post::model()->updateAll($attributes,$condition,$params);
$count =Post::model()->updateAll(array('username'=>'11111','password'=>'11111'),'password=:pass',array(':pass'=>'1111a1'));
if($count > 0){
    echo "修改成功";
}else{
    echo "修改失敗";
}
 
$rt = PostList::model()->updateAll(array('status'=>'1'),'staff_postid=:staff AND host_postid=:host',array(':staff'=>$staff_postid,':host'=>$host_postid));

Post::model()->updateByPk($pk,$attributes,$condition,$params);
$count=Post::model()->updateByPk(1,array('username'=>'jack','password'=>'jack'));

$count=Post::model()->updateByPk(array(1,2),array('username'=>'jack1','password'=>'jack1'),'username=:name',array(':name'=>'jack'));

if($count > 0){
    echo "修改成功";
}else{
    echo "修改失敗";
}
 
Post::model()->updateCounters($counters,$condition,$params);

$count=Post::model()->updateCounters(array('status'=>1),'username=:name',array(':name'=>'jack'));

if($count > 0){
    echo "修改成功";
}else{
    echo "修改失敗";
}
//array('status'=>1)代表數據庫中的post表根據條件username='jack',查詢出的所有結果status字段都自加1

六、刪除的方法

//deleteAll
Post::model()->deleteAll($condition,$params);
$count = Post::model()->deleteAll('username=:name and password=:pass',array(':name'=>'jack',':pass'=>'jack'));
$count = Post::model()->deleteAll('postid in("1,2,3")');//刪除postid為這些的數據
if($count>0){
    echo "刪除成功";
}else{
    echo "刪除失敗";
}
 
//deleteByPk
Post::model()->deleteByPk($pk,$condition,$params);
$count = Post::model()->deleteByPk(1);
$count =Post::model()->deleteByPk(array(1,2),'username=:name',array(':name'=>'jack'));
if($count>0){
    echo "刪除成功";
}else{
    echo "刪除失敗";
}}

七、執行原生的SQL語句

$sql = "select t.*, t1.userphone, t1.truename, t1.usermail from {{member_contact}} t left join {{member}} t1 on t.userid = t1.userid where t.contactid in (1,2,3)";
$arrRows=Yii::app()->db->createCommand($sql)->query();
foreach ($arrRows as $k => $v){
  
}

八、事務處理 【多表更新插入操作請使用事務處理】

$transaction = Yii::app()->db->beginTransaction();
try{
                $arrOrderProfile = array(
                    'orderid'     => $orderId,
                    'userip'      => $userip,
                    'contactid' => $contactId,
                    'updatetime'=> $now
                );
                $modelOrderProfile = new RepairOrderProfile();
                $modelOrderProfile->attributes = $arrOrderProfile;
                if(!$modelOrderProfile->save()){
                    throw new CException('維修訂單生成失敗,通知事務回滾');
                }
                $recordCounter = Counter::model()->updateByPk(1,array('max_id'=>$orderId));
                if($recordCounter <= 0 )
                    throw new CException('訂單計數器更新失敗,通知事務回滾');
                $transaction->commit(); //提交事務會真正的執行數據庫操作
}catch(Exception $e){
    file_put_contents('action.log', $e->getCode().':'.$e->getMessage().'--'.date('Y-m-d H:i:s',time()),FILE_APPEND);
    $transaction->rollback();
   
}