$query = DB::table(self::$_table . ' as rg') ->select(DB::raw('rg.id,rg.user_id,rg.name,rg.parent_id, count(ri.id) as res_cnt')) ->leftJoin('resource_infos as ri', function($join){ $join->on('ri.group_id', '=', 'rg.id')->where('ri.is_delete', '=','0')...
在例中,使用DB::select("select * from student")查询数据表student所有用户信息;dd()方法是Laravel内置函数,可以将一个数组以节点树的形式展示出来。 3.更新数据 首先编辑web.php,新建路由匹配规则,如下所示: Route::get("/updMessage" , 'DBController@updMessage'); 然后编辑DBController.php,新增updMessage(...
DB::table('name')->remember(5, 'cache-key-name')->get(); DB::table('name')->cacheTags('my-key')->remember(5)->get(); DB::table('name')->cacheTags(array('my-first-key','my-second-key'))->remember(5)->get(); DB::table('users') ->select(DB::raw('count(*) as use...
Laravel提供了3种操作数据库方式:DB facade(原始方式)、查询构造器和EloquentORM。 一、数据库操作之DB facade 1.查询操作 //返回一个二维数组DB::select("select * from table"); 2.新增操作 //新增成功则返回trueDB::insert("insert into table(vip_ID,vip_name,vip_type,vip_fenshu) values(?,?,?,?
Laravel DB select语句。查询返回列名作为结果,而不是值 Laravel是一种流行的PHP开发框架,它提供了丰富的数据库操作功能。在Laravel中,可以使用DB facade来执行数据库查询操作。 针对你提到的问题,如果想要查询返回列名作为结果,而不是对应的值,可以使用Laravel的Schema Builder和Query Builder来实现...
SELECT COUNT(*) FROM ( SELECT COUNT(*) FROM table GROUP BY field_1, field_2 ) AS total 如果我能够使用该类来做到这一点,我不会有问题,但是我被迫使用Eloquent类:DB::Customers::select(DB::raw($sql))->first()->total; 这段代码返回以下 SQL:SELECT COUNT(*) FROM ...
2.从一张表中获取一行或一列,如果我们只是想要从数据表中获取一行数据,可以使用first方法,该方法将会返回单个StdClass对象. $user=DB::table('users')->where('name','John')->first();echo$user->name; 3.从一张表中获取组块结果集,如果我们需要处理成千上百条数据库记录,可以考虑使用chunk方法,该方法一...
DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=laravel DB_USERNAME=root DB_PASSWORD= If you choose to use a database other than SQLite, you will need to create the database and run your application'sdatabase migrations: ...
First, we will define a route to display a view that requests the user to confirm their password:Route::get('/confirm-password', function () { return view('auth.confirm-password'); })->middleware('auth')->name('password.confirm');...
Laravel Eloquent Scope as Select: Stop duplicating your Eloquent query scopes and constraints in PHP. This package lets you re-use your query scopes and constraints by adding them as a subquery. Laravel MinIO Testing Tools: Run your tests against a MinIO S3 server. Laravel Mixins: A collection...