1$users = DB::table('users') 2 ->orderBy('name', 'desc') 3 ->groupBy('count') 4 ->having('count', '>', 100) 5 ->get();Offset & Limit1$users = DB::table('users')->skip(10)->take(5)->get();JoinsThe query builder may also be used to write join statements. Take a...
To perform a basic "inner join", you may use the join method on a query builder instance. The first argument passed to the join method is the name of the table you need to join to, while the remaining arguments specify the column constraints for the join. You may even join multiple ...
Database: Query BuilderIntroductionLaravel's database query builder provides a convenient, fluent interface to creating and running database queries. It can be used to perform most database operations in your application and works on all supported database systems.The...
坏代码: if (count((array) $builder->getQuery()->joins) > 0) 好代码: // Determine if there are any joins. if (count((array) $builder->getQuery()->joins) > 0) 最佳: if ($this->hasJoins()) 将前端代码和 PHP 代码分离: 不要把 JS 和 CSS 代码写到 Blade 模板里,也不要在 PHP ...
To perform a basic "inner join", you may use the join method on a query builder instance. The first argument passed to the join method is the name of the table you need to join to, while the remaining arguments specify the column constraints for the join. You may even join multiple ...
Blog::with('product.category') ->where('status', 'Y') ->where('featured_position', 'Y') ->orderBy('id', 'DESC') ->get(); 从上面的表中,结果将显示2个blog,即id为1和3的blog。但是上面的代码是从blog表中获取所有blog的结果。
Of course, as you can see, you can join to multiple tables in a single query:$users = DB::table('users') ->join('contacts', 'users.id', '=', 'contacts.user_id') ->join('orders', 'users.id', '=', 'orders.user_id') ->select('users.*', 'contacts.phone', 'orders.price...
model作为一个query builder,你也可以添加限制来查询,并且使用get方法来检索结果。 $flights = App\Flight::where('active', 1) ->orderBy('name', 'desc') ->take(10) ->get(); Collections 集合 For Eloquent methods like all and get which retrieve multiple results, an instance of Illuminate\Data...
6// when using query builder 7foreach (DB::table('posts')->cursor() as $post){ 8// Process a single post 9} The above example will make a single database query, retrieve all the records from the table, and hydrate Eloquent models one by one. This approach will make only one data...
You may also use the count, sum, max, and other aggregate methods provided by the query builder. These methods return the appropriate scalar value instead of a full model instance: 可以使用count、sum、max和其他的聚合方法 $count = App\Flight::where('active', 1)->count(); ...