Yii 1.0資料庫操作 查詢、增加、更新、刪除

Jason發表於2019-02-16
資料庫

1、根據條件查詢一個集合

$objectResult=Post::model()->findAll($condition,$params);
$oClasses = classes::model()->findAll(array(
            `select`=>`classId,className,grade,type,status`,
            `condition`=>`classId=21 and grade=1`,
            `order`=>`createtime desc`,
        ));
$objectResult=Post::model()->findAll("username=:name",array(":name"=>$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,把條件放到陣列裡面 findAllByAttributes

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

4、根據SQL語句查詢一個陣列 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物件 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資料,【可能是多個,但是他只返回第一行資料】

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

7、根據條件查詢一組資料,【可以是多個條件,把條件放到陣列裡面,查詢的也是第一條資料】

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

8、根據SQL語句查詢一組資料,【查詢的也是第一條資料】

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

9、通過CDbCriteria類find查詢出一個物件

$criteria=new CDbCriteria; 
$criteria->select=`username`; // 限制顯示哪些欄位 
$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);    //根據你的引數自動處理成addCondition或者addInCondition.
$criteria->compare(`postid`, array(1,2,3));   //陣列就會呼叫addInCondition 
 
 
$criteria->select = `postid,parentid,name`; //限制顯示哪些欄位 
$criteria->join = `xxx`; //連線表 
$criteria->with = `xxx`; //呼叫relations  
$criteria->limit = 10;    //取1條資料，如果小於0，則不作處理 
$criteria->offset = 1;   //兩條合併起來，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陣列有沒有資料,有資料返回一個true,否則沒有找到

$boolExists=Post::model()->exists($condition,$params);
$boolExist=Post::model()->exists("name=:name",array(":name"=>$username));

四、新增的方法

$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 "新增成功";
}else{
    echo "新增失敗";
}

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)代表資料庫中的post表根據條件username=`jack`,查詢出的所有結果status欄位都自加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`));
$count = Post::model()->deleteAll(`postid in("1,2,3")`);//刪除postid為這些的資料
if($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資料庫操作
}catch(Exception $e){
    file_put_contents(`action.log`, $e->getCode().`:`.$e->getMessage().`--`.date(`Y-m-d H:i:s`,time()),FILE_APPEND);
    $transaction->rollback();
   
}

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