php mysql coherent operation

where('id=1 and name="wangjialin"')
//            ->find());

        // 参数为数组
        $map = [
//            'id'=> 2,
//            'name' => 'zhangsan',
//            'age' => ['>' , 10 ],
//            'name' => ['like' , '%zhang%'],
            'age' => ['between' , '14,18']
        ];
//        dump(Db::name('user')->where($map)->select());

        // field order limit
//        dump(Db::name('user')
//            ->field('id , name  as username, age')
//            ->select());
//        dump(Db::name('user')
//            ->field(['id' , 'name as username' , 'age' , 'sex'])
//            ->order('id desc')
//            ->limit(1)
//            ->select());

        // group having
//        dump(Db::name('user')
//            ->field(['sum(age) as all_age'])
//            ->group('password')
//            ->having('all_age > 50')
//            ->select());

        // 聚合操作count avg sum min max
        dump(Db::name('user')->count());
        dump(Db::name('user')->sum('age'));
        dump(Db::name('user')->avg('age'));

        // 获取最近的执行的sql语句
        dump(Db::name('user')->getLastSql());
    }


}