DB::table('users') ->where('name', '=', 'John') ->orWhere(function ($query) { $query->where('votes', '>', 100) ->where('title', '<>', 'Admin'); }) ->get();如你所见,上面例子会将闭包传入orWhere 方法,以告诉查询语句构造器开始一个约束分组。此闭包接收一个查询语句构造器的...
$users = DB::table('users') ->where('name', '=', 'John') ->where(function ($query) { $query->where('votes', '>', 100) ->orWhere('title', '=', 'Admin'); }) ->get();你可以看到,通过一个 Closure 写入where 方法构建一个查询构造器 来约束一个分组。 这个 Closure 接收一个...
The query builder also provides an insert method for inserting records into the database table. The insert method accepts an array of column names and values to insert:1DB::table('users')->insert( 2 ['email' => 'john@example.com', 'votes' => 0] 3);...
Laravel's database query builder provides a convenient, fluent interface to creating and running database queries. It can be used to perform most database operations in your application and works on all supported database systems.The Laravel query builder uses PDO parameter binding to protect your...
Laravel's database query builder provides a convenient, fluent interface to creating and running database queries. It can be used to perform most database operations in your application and works perfectly with all of Laravel's supported database systems....
"mysql:host={$host};port={$port};dbname={$database}":"mysql:host={$host};dbname={$database}";} 通过构造函数知道最重要的一个方法是createConnection($dsn, $config, $options),该方法实例化了一个PDO,这里就明白了Query Builder也只是在PDO基础上封装的一层API集合,Query Builder提供的Fluent API...
说明:本文主要学习Laravel Database模块的Query Builder源码。实际上,Laravel通过Schema Builder来设计数据库,通过Query Builder来CURD数据库。Query Builder并不复杂或神秘,只是在PDO扩展的基础上又开放封闭的包装了一层,提供了fluent api,使得书写的代码也很简洁流畅。在看下Query Builder源码之前,先大概探索下illuminate/...
说明:本文主要学习Laravel Database模块的Query Builder源码。实际上,Laravel通过Schema Builder来设计数据库,通过Query Builder来CURD数据库。Query Builder并不复杂或神秘,只是在PDO扩展的基础上又开放封闭的包装了一层,提供了fluent api,使得书写的代码也很简洁流畅。在看下Query Builder源码之前,先大概探索下illuminate/...
* @param \Illuminate\Database\Query\Builder $query * @return void */ public function __construct(QueryBuilder $query) { $this->query = $query; } 可见两者之间并没有继承的关系,而是Eloquent\Builder采用了代理模式对Query\Builder进行了操作1
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