代码语言：javascript复制
return DB::connection('mysql')->select('SELECT * FROM `article` WHERE `category_id` = ?', [1]);
return DB::select('SELECT * FROM `article` WHERE `category_id` = ?', [1]);
#使用命名绑定
#除了使用 ? 表示参数绑定外，你还可以使用命名绑定的形式来执行一个查询：
return DB::select('select * from `article` where `id` = :id', ['id' => 2]);
return DB::insert('insert into `article` (`title`, `content`) values (?, ?)', ['aa', 'aaa']);
return DB::update('update `article` set `views` = 100 where id = ?', [66]);
return DB::delete('delete from `article` where id = ?', [66]);
#自动提交
return DB::transaction(function () {
DB::select('select * from `article` where `id` = :id', ['id' => 65]);
DB::update('update `article` set `views` = 100 where id = ?', [65]);
});
#手动提交
DB::beginTransaction();
DB::rollBack();
DB::commit();
#处理死锁
DB::transaction(function () {
DB::update('update users set votes = 1');
DB::delete('delete from posts');
}, 5);https://learnku.com/docs/laravel/9.x/database/12245
