RuntimeException' with message 'Unable to read from stream' in D:\upupw\UPUPW_NP5.6\htdocs\xiaokeai\phpcms16372) #1 [internal function]: GuzzleHttp\Handler\CurlFactory->GuzzleHttp\Handler\{closure}(Resource id#22, Resource id #0, 16372) #2 D:\upupw\UPUPW_
我很难在一个栏目中显示学生正在选修的课程数量。FROM Student GROUP BY Student.Student_ID, Student.First_Name, Student.Last_Name 创建一个视图调用BUSY_STUDENT,为所有注册超过2个班级的学生存储连接的姓名(名字和姓氏)、学生id</