YII1 增、刪、改、查數據庫操作

 

增

//注意插入的時候 是用的new Post
$objectPost = new Post; $objectPost->username = $username; $objectPost->password = $password; //或許
$objectPost->attributes = $arrNewData; if($objectPost->save()){ $intPostId= $objectPost->primaryKey; //生成主鍵id
    echo "添加成功"; }else{ echo "添加失敗"; //在調試的狀態下可以使用$objectPost->getErrors()來打印數據模型錯誤信息 
}

刪 

根據條件刪除集合 deleteAll($condition='',$params=array());

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

根據主鍵刪除一個集合 deleteByPk($pk,$condition='',$params=array())

$boolean = Post::model()->deleteByPk(1); $boolean = Post::model()->deleteByPk(array(1,2),'username=:name',array(':name'=>'aipanshi.com')); if($boolean > 0){ echo "刪除成功"; }else{ echo "刪除失敗"; }

改

根據條件 updateAll($attributes,$condition='',$params=array())

$attributes = array('username'=>'www.aipanshi.com','postsort'=>'99'); $condition = 'status=:s'; $params = array(':s'=>2); $boolean = Post::model()->updateAll($attributes,$condition,$params); if($boolean > 0){ echo "修改成功"; }else{ echo "修改失敗"; }

根據主鍵 updateByPk($pk,$attributes,$condition='',$params=array())

/** * $pk主鍵 也可以是一個數組集合 * $attributes是要修改的字段的集合 * $condition條件 * $params傳入的值 */ $attributes = array('username'=>'www.aipanshi.com','password'=>'www.aipanshi.com'); $count =Post::model()->updateByPk(1,$attributes); $attributes2 = array('username'=>'www.aipanshi.com1','password'=>'www.aipanshi.com1'); $condition2 = 'username=:name'; $params2 = array(':name'=>'www.aipanshi.com'); $boolean =Post::model()->updateByPk(array(1,2),$attributes2,$condition2,$params2); if($boolean > 0){ echo "修改成功"; }else{ echo "修改失敗"; }

自增和自減 updateCounters($counters,$condition='',$params=array());

//數據庫中的post表根據條件username='www.aipanshi.com',查詢出的所有結果status字段都自加1
$counters = array('status'=>1);//-1自減
$condition = 'username=:name'; $params = array(':name'=>'www.aipanshi.com'); $boolean=Post::model()->updateCounters($counters,$condition,$params); if($boolean > 0){ echo "修改成功"; }else{ echo "修改失敗"; }

查

查詢指定字段

$res = KnowledgeAuthList::model()->find([
            'select' => ['id'],
            'condition' => 'auth_name=:auth_name',
            'params' => [':auth_name'=>'基礎']
        ]);

根據條件查詢一個集合 findAll($condition='',$params=array())

$res=Post::model()->findAll("username=:name",array(":name"=>$username)); $res=Post::model()->findAll("username=:name and status=:s",array(":name"=>'jack',':s'=>1)); $info = Post::model()->findAll("status = '1' ORDER BY postid DESC limit 10 "); ```

根據主鍵查詢一個集合,可以使用多個主鍵 findAllByPk($pk,$condition='',$params=array())

$condition = "username like :name and status=:s"; $res=Post::model()->findAllByPk($ids,$condition,array(':name'=>$name,':s'=>1)); $res=Post::model()->findAllByPk(array(1,2));

根據數組條件查詢一個集合 findAllByAttributes($attributes,$condition='',$params=array())

$res=Post::model()->findAllByAttributes($attributes,$condition,$params); $res=Post::model()->findAllByAttributes(array('username'=>'www.aipanshi.com'));

根據SQL語句查詢一個數組 findAllBySql($sql,$params=array())

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

根據主鍵查詢出一個對象 findByPk($pk,$condition='',$params=array())

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

根據條件查詢,他只返回第一行數據find($condition='',$params=array())

$res=Post::model()->find('username=:name',array(':name'=>'www.aipanshi.com'));

根據數組條件查詢,查詢的也是第一條數據findByAttributes($attributes,$condition='',$params=array())

$res=Post::model()->findByAttributes(array('username'=>'www.aipanshi.com'));

根據SQL語句查詢,查詢的也是第一條數據 findBySql($sql,$params=array())

$sql = "select * from objectResult where username=:name"; $res=Post::model()->findBySql($sql,array(':name'=>'www.aipanshi.com'));

通過CDbCriteria類find查詢出一個對象

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

多條件查詢的語句

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

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count($condition='',$params=array())

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

根據SQL語句查詢一個集合有多少條記錄,返回int型 countBySql($sql,$params=array())

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

根據條件查詢有無數據返回一個boolean exists($condition='',$params=array())

$boolExist=Post::model()->exists("name=:name",array(":name"=>'aipanshi.com'));

查詢出復合條件的用戶數組，指定了index以后，結果數組$users已經是用id做為主鍵的了

$posts = Post::model()->findAll(array('condition'=>'postsort > 18', 'index'=> 'id'));

 

摘自：http://www.aipanshi.com/post/type.html?name=yii