yii DAO操作总结

1. 数据库代码：

   /*

   Navicat MySQL Data Transfer

   Source Server         : lonxom

   Source Server Version : 50524

   Source Host           : localhost:3306

   Source Database       : test

   Target Server Type    : MYSQL

   Target Server Version : 50524

   File Encoding         : 65001

   Date: 2013-10-12 00:03:03

   */

   SET FOREIGN_KEY_CHECKS=0;

   -- ----------------------------

   -- Table structure for `city`

   -- ----------------------------

   DROP TABLE IF EXISTS `city`;

   CREATE TABLE `city` (

     `id` int(10) unsigned NOT NULL AUTO_INCREMENT,

     `name` varchar(32) COLLATE utf8_unicode_ci NOT NULL DEFAULT '' COMMENT '城市名',

     PRIMARY KEY (`id`)

   ) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci COMMENT='城市表';

   -- ----------------------------

   -- Records of city

   -- ----------------------------

   INSERT INTO `city` VALUES ('1', '北京');

   INSERT INTO `city` VALUES ('2', '上海');

   INSERT INTO `city` VALUES ('3', '广州');

   INSERT INTO `city` VALUES ('4', '武汉');

   INSERT INTO `city` VALUES ('5', '天津');

   -- ----------------------------

   -- Table structure for `user`

   -- ----------------------------

   DROP TABLE IF EXISTS `user`;

   CREATE TABLE `user` (

     `id` int(10) unsigned NOT NULL AUTO_INCREMENT,

     `username` varchar(32) CHARACTER SET utf8 NOT NULL COMMENT '用户名',

     `city_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '城市',

     `create_time` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '创建时间',

     `update_time` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '更新时间',

     PRIMARY KEY (`id`)

   ) ENGINE=InnoDB AUTO_INCREMENT=23 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci COMMENT='用户表';

   -- ----------------------------

   -- Records of user

   -- ----------------------------

   INSERT INTO `user` VALUES ('2', '菩提', '2', '0', '0');

   INSERT INTO `user` VALUES ('3', '天师', '5', '0', '0');

   INSERT INTO `user` VALUES ('5', '久1', '3', '0', '0');

   INSERT INTO `user` VALUES ('6', '久2', '4', '0', '0');

   INSERT INTO `user` VALUES ('7', '久3', '1', '0', '0');

   INSERT INTO `user` VALUES ('8', '久4', '4', '0', '0');

   INSERT INTO `user` VALUES ('9', '久5', '5', '0', '0');

   INSERT INTO `user` VALUES ('10', '久6', '1', '0', '0');

   INSERT INTO `user` VALUES ('11', '久7', '3', '0', '0');

   INSERT INTO `user` VALUES ('12', '久8', '3', '0', '0');

   INSERT INTO `user` VALUES ('13', '久9', '1', '0', '0');

   INSERT INTO `user` VALUES ('14', '帅帅', '1', '1381395175', '1381395175');

   INSERT INTO `user` VALUES ('15', '小猪猪', '1', '1381396237', '1381463258');

   INSERT INTO `user` VALUES ('16', '阿浩', '2', '1381396559', '1381396559');

   INSERT INTO `user` VALUES ('17', '鹏鹏', '1', '1381398344', '1381398344');

   INSERT INTO `user` VALUES ('18', '方方', '5', '1381398969', '1381398969');

   INSERT INTO `user` VALUES ('19', '官人', '1', '1381456860', '1381456860');

   INSERT INTO `user` VALUES ('20', '谢平', '4', '1381461563', '1381461563');

   INSERT INTO `user` VALUES ('21', '元方', '2', '1381463288', '1381463288');

   INSERT INTO `user` VALUES ('22', '康师傅', '1', '1381500128', '1381500128');

   -- ----------------------------

   -- Table structure for `user_info`

   -- ----------------------------

   DROP TABLE IF EXISTS `user_info`;

   CREATE TABLE `user_info` (

     `id` int(10) unsigned NOT NULL AUTO_INCREMENT,

     `user_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '用户表id',

     `info` text CHARACTER SET utf8 COMMENT '用户简介',

     PRIMARY KEY (`id`)

   ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci COMMENT='用户信息表';

   -- ----------------------------

   -- Records of user_info

   -- ----------------------------

   INSERT INTO `user_info` VALUES ('1', '15', '我是一个好人');

   END

基本查询方法

1. 1

   //DAO方式的  插入动作

       public function actionCreate()

       {

           $res=Yii::app()->db->createCommand()->insert("user",array(

               'username'=>'水墨淡清',

              

           ));

           dump($res,FALSE);

           dump(Yii::app()->db->getLastInsertID());//获取最新插入的ID

       }

       

2. 2

   //DAO方式的  修改动作

       public function actionUpdate()

       {

           $res=Yii::app()->db->createCommand()->update('user',array(

               'username'=>'我是来玩的'

           ), 'id=:id',array(':id'=>24));

           dump($res);

       }

3. 3

    //DAO方式的  删除动作

       

       public function actionDelete($id)

       {

           $id=trim($id);

           $res=Yii::app()->db->createCommand()->delete('user','id=:id',array(':id'=>$id));

           dump($res);

       }

4. 4

   //单条数据查询 queryRow()

       

       public function actionRow()

       {

           $row=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where('id=:id',array(':id'=>2))->queryRow();

           dump($row);

       }

5. 5

   //多条数据查询 queryAll()

       public function actionAll()

       {

           $all=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where('id>:id',array(':id'=>1))->queryAll();

           dump($all);

       }

6. 6

   //统计数据数量 queryScalar()

       public function actionScalar()

       {

           $scalar=Yii::app()->db->createCommand()->select('count(1)')->from('user')->where('id>:id',array(':id'=>1))->queryScalar();

           dump($scalar);

       }

7. 7

   //查询所有的ID

       public function actionColumn()

       {

           $ids=Yii::app()->db->createCommand()->select('id')->from('user')->where('id>:id',array(':id'=>1))->queryColumn();

           dump($ids);

       }

   END

基本查询条件方法

1.  

    //查询出ID大于1 并且小于5的所有数据集合 

           //and()方法

           //$all=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where('id>:id and id<5',array(':id'=>1))->queryAll();

           

           //and()数组方法

           //$all=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where(array('and','id>1','id<5'))->queryAll();

           

           //andWhere()方法

           //$all=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where('id>:id',array(':id'=>1))->andWhere('id<:eid',array(':eid'=>5))->queryAll();

2.  

    //使用in查询出id在5和6里面的数据集合

           //$all=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where(array('in','id',array(5,6)))->queryAll();

3.  

    //使用like查询 并且 ID大于6小于10

           //$all=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where(array('like','username','%久%'))->andWhere(array('and','id>6','id<10'))->queryAll();

4.  

   //查询出名字里面带有9的 3条数据 ID倒序 略过3条数据

   //$all=Yii::app()->db->createCommand()->select('id,username,city_id')->from('user')->where(array('like','username','%久%'))->limit(3)->offset(3)->order('id desc')->queryAll();

   dump($all);

5. 5

       //关联查询  

       public function actionJoin()

       {

           //取出id 大于 2 小于 6的所有用户信息并取出城市名称

           $users=Yii::app()->db->createCommand()->select('u.id,u.username,c.name')

                                                 ->from('user u')

                                                 ->join('city c','c.id=u.city_id')

                                                 ->where('u.id>2')

                                                 ->andWhere('u.id<6')

                                                 ->queryAll();

           dump($users);

                  

       }