ThinkPhp学习09

三、区间查询

$data['id']=array(array('gt',4),array('lt',10));//默认关系是 and 的关系

//SELECT * FROM `tp_user` WHERE ( (`id` > 4) AND (`id` < 10) )

$data['id']=array(array('gt',4),array('lt',10),'or') //关系就是or的关系

 //2.SELECT * FROM `tp_user` WHERE ( (`id` > 4) AND (`id` < 10)  )

         $data['id']=array(array('gt',4),array('lt',10));

         //SELECT * FROM `tp_user` WHERE ( (`id` > 4) OR (`id` < 10) )

         //$data['id']=array(array('gt',4),array('lt',10),'or');

         $arr=$m->where($data)->select();

$data['name']=array(array('like','%2%'),array('like','%五%'),'gege','or');

 //2.SELECT * FROM `tp_user` WHERE ( (`username` LIKE '%2%') OR (`username` LIKE '%李%') OR (`username` = '李') )

         $data['username']=array(array('like','%2%'),array('like','%李%'),'李','or');

         $arr=$m->where($data)->select();

四、统计查询

count //获取个数

    //2.SELECT COUNT(*) AS tp_count FROM `tp_user` WHERE ( `sex` = 0 )

        $data['sex']=0;

        $arr=$m->where($data)->count();

max //获取最大数

//2.SELECT MAX(id) AS tp_max FROM `tp_user`

        echo $m->max('id');

min //获取最小数

 //3.SELECT MIN(id) AS tp_min FROM `tp_user`

        echo $m->min('id');

avg //获取平均数、sum //获取总和

 //2.SELECT AVG(id) AS tp_avg FROM `tp_user`

         echo $m->avg('id');

        //3.SELECT SUM(id) AS tp_sum FROM `tp_user` LIMIT 1

         echo $m->sum('id');

         //var_dump($arr);

五、SQL直接查询

a、query 主要数处理读取数据的成功返回数据的结果集失败返回boolean false

         //2.select * from tp_user where id >5

         $result=$m->query("select *  from tp_user where id >5");

         var_dump($result);

b、execute 用于更新个写入操作成功返回影响行数失败返回boolean false $m=M(); $result=$m->execute("insert into t_user(`username`) values('ztz3')"); var_dump($result);

//2.insert into tp_user(`username`) values('ztz3')

        $result=$m->execute("insert into tp_user(`username`) values('ztz3')");

        var_dump($result);

相关文章