Yii 1.0数据库操作 查询、增加、更新、删除
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($count > 0){ echo "修改成功";}else{ echo "修改失败";}//array('status'=>1)代表数据库中的post表根据条件username='jack',查询出的所有结果status字段都自加1
六、删除的方法
//deleteAllPost::model()->deleteAll($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";} //deleteByPkPost::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(); }
转载于:https://www.cnblogs.com/aifengguo/p/6322571.html
