Yii 1.0数据库操作 查询、增加、更新、删除

本文原地址：http://www.aipanshi.com/post/2.html

1、根据条件查询一个集合

$objectResult=Post::model()->findAll($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、根据主键查询一个集合,可以使用多个主键 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、根据条件查询一个集合,可以是多个条件,把条件放到数组里面 findAllByAttributes

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

$objectResult=Post::model()->findAllByAttributes(array("username"=>"jack"));
 

4、根据SQL语句查询一个数组 findAllBySql

$arrResult=Post::model()->findAllBySql($sql,$params); 

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

5、根据主键查询出一个对象 eg：findByPk(1);

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

6、根据条件查询出一组数据,【可能是多个,但是他只返回第一行数据】

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

7、根据条件查询一组数据,【可以是多个条件,把条件放到数组里面,查询的也是第一条数据】

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

8、根据SQL语句查询一组数据,【查询的也是第一条数据】

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

9、通过CDbCriteria类find查询出一个对象 

$criteria=new CDbCriteria;  

$criteria->select="username"; 

// 限制显示哪些字段  

$criteria->condition="username=:username";     

//一个查询条件用aCondition.多条件用addCondition
$criteria->params=array(":username=>"jack""); 

$criteria->order = "postsort DESC";

 $criteria->limit = "3"; 

$post=Post::model()->find($criteria);  

10、多条件查询的语句

$criteria = new CDbCriteria;      

$criteria->addCondition("postid=1"); 

//等同于 where postid = 1  

$criteria->addInCondition("postid", array(1,2,3,4,5)); 

//等同于 where postid IN (1,2,3,4,5,);  

$criteria->addNotInCondition("postid", array(1,2,3,4,5));

//等同于 NOT IN (1,2,3,4,5,) 

$criteria->addCondition("postid=1","OR");

//等同于 OR而非AND  

$criteria->addSearchCondition("username", "jack");

//等同于 where name like "%jack%"  

$criteria->addBetweenCondition("postid", 1, 4);

// 等同于 between 1 and 4
$criteria->compare("postid", 1);    

//根据你的参数自动处理成addCondition或者addInCondition.
$criteria->compare("postid", array(1,2,3));   

//数组就会调用addInCondition 
 
  

$criteria->select = "postid,parentid,name"; 

//限制显示哪些字段  

$criteria->join = "xxx"; 

//连接表 
$criteria->with = "xxx"; 

//调用relations   

$criteria->limit = 10;    

//取1条数据，如果小于0，则不作处理  

$criteria->offset = 1;   

//两条合并起来，则表示 limit 10 offset 1,或者代表了。limit 1,10  

$criteria->order = "xxx DESC,XXX ASC" ;

//排序条件  

$criteria->group = "group 条件";  

$criteria->having = "having 条件 ";  

$criteria->distinct = FALSE; //是否唯一查询

三、查询个数,判断查询是否有结果

根据一个条件查询一个集合有多少条记录,返回一个int型数字 

$intCount=Post::model()->count($condition,$params); 

$intCount=Post::model()->count("username=:name",array(":name"=>$username));
  

根据SQL语句查询一个集合有多少条记录,返回一个int型数字 

$intCount=Post::model()->countBySql($sql,$params); 

$intCount=Post::model()->countBySql("select * from objectResult where username=:name",array(":name"=>"objectResult"));
  

根据一个条件查询查询得到的数组有没有数据,有数据返回一个true,否则没有找到 

$boolExists=Post::model()->exists($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; 

或许 

$objectPost->attributes = $arrNewData; 

if($objectPost->save()){
    

	$intPostId= $objectPost->primaryKey; 

	//生成主键id
   

	echo "添加成功"; 

}else{
    

	echo "添加失败"; 

}

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 "修改失败";

 }
 

$rt = PostList::model()->updateAll(array("status"=>"1"),"staff_postid=:staff AND host_postid=:host",array(":staff"=>$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 "修改失败";

 }
 

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 "修改失败"; 

}

 //array("status"=>1)代表数据库中的post表根据条件username="jack",查询出的所有结果status字段都自加1

六、删除的方法

//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")");

//删除postid为这些的数据 

if($count>0){
    

	echo "删除成功"; 

}else{
    

	echo "删除失败"; 

}
  

//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 "删除成功";

 }else{
   

	 echo "删除失败"; 

}

七、执行原生的SQL语句

$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、事务处理 【多表更新插入操作请使用事务处理】

$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("维修订单生成失败,通知事务回滚");

	}
                

	$recordCounter = Counter::model()->updateByPk(1,array("max_id"=>$orderId));

    if($recordCounter <= 0 ) 

		throw new CException("订单计数器更新失败,通知事务回滚");

		$transaction->commit(); //提交事务会真正的执行数据库操作 

}catch(Exception $e){

	file_put_contents("action.log", $e->getCode().":".$e->getMessage()."--".date("Y-m-d H:i:s",time()),FILE_APPEND);
    	$transaction->rollback();

}