Question

我正在开发一个简单的Web应用程序，为用户提供测验。由于我是ASP.NET世界的新手，我正在关注如何在ASP.net网站上构建测验引擎视频系列。我的数据库设计类似于这些视频中使用的设计。这是link of the first video： http://www.asp.net/general/videos/lesson-11-building-a-quiz-engine-1 [^]

我的一切正常，但我现在想开发一个查询，帮助我向管理员显示统计信息，显示：

每个月的参与者总数和参加测验
每年参与者总数和参加测验
系统中的测验总数

为了澄清最后一点，我希望管理员看到以下内容：

参加者数量#Taken Quizzes

11月15日6 10月10日9日

另一个例子：

年度参加者数量#Taken Quizzes

2011 150 89

我认为这样的事情对于了解系统的使用情况非常有用，并向管理人员展示系统在copmany中的效率。

数据库的架构：

CREATE TABLE [dbo].[Quiz](
        [QuizID] [int] IDENTITY(1,1) NOT NULL,
        [Title] [varchar](max) NOT NULL,
        [Description] [varchar](max) NULL,
     CONSTRAINT [PK_Quiz] PRIMARY KEY CLUSTERED 
    (
        [QuizID] ASC
    )WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
    ) ON [PRIMARY]
    GO
    SET ANSI_PADDING OFF
    GO
    SET IDENTITY_INSERT [dbo].[Quiz] ON
    INSERT [dbo].[Quiz] ([QuizID], [Title], [Description]) VALUES (6, N'Safety', N'General Safety Test')
    INSERT [dbo].[Quiz] ([QuizID], [Title], [Description]) VALUES (7, N'my title', N'my description')
    INSERT [dbo].[Quiz] ([QuizID], [Title], [Description]) VALUES (9, N'General Safety Quiz2', N'Testing')
    INSERT [dbo].[Quiz] ([QuizID], [Title], [Description]) VALUES (10, N'General Safety Quiz3', N'Testing #2')
    SET IDENTITY_INSERT [dbo].[Quiz] OFF


    /****** Object:  Table [dbo].[Question]    Script Date: 11/17/2011 00:44:38 ******/

    CREATE TABLE [dbo].[Question](
        [QuestionID] [int] IDENTITY(1,1) NOT NULL,
        [Question] [varchar](max) NOT NULL,
        [Answer1] [varchar](max) NOT NULL,
        [Answer2] [varchar](max) NOT NULL,
        [Answer3] [varchar](max) NOT NULL,
        [Answer4] [varchar](max) NOT NULL,
        [CorrectAnswer] [tinyint] NOT NULL,
        [AnswerExplanation] [varchar](max) NULL,
        [QuestionOrder] [tinyint] NOT NULL,
        [QuizID] [int] NOT NULL,
     CONSTRAINT [PK_Question] PRIMARY KEY CLUSTERED 
    (
        [QuestionID] ASC
    )WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
    ) ON [PRIMARY]
    GO
    SET ANSI_PADDING OFF
    GO
    SET IDENTITY_INSERT [dbo].[Question] ON
    INSERT [dbo].[Question] ([QuestionID], [Question], [Answer1], [Answer2], [Answer3], [Answer4], [CorrectAnswer], [AnswerExplanation], [QuestionOrder], [QuizID]) VALUES (4, N'What is your name?', N'Mohammed ', N'Ali', N'Hassan', N'Husain', 1, N'My Name', 1, 6)
    INSERT [dbo].[Question] ([QuestionID], [Question], [Answer1], [Answer2], [Answer3], [Answer4], [CorrectAnswer], [AnswerExplanation], [QuestionOrder], [QuizID]) VALUES (7, N'What is the definition of Safety?', N'Being Safe', N'Being in danger', N'Be careful', N'be careless', 1, N'Nothing', 1, 9)
    INSERT [dbo].[Question] ([QuestionID], [Question], [Answer1], [Answer2], [Answer3], [Answer4], [CorrectAnswer], [AnswerExplanation], [QuestionOrder], [QuizID]) VALUES (8, N'What is the definition of Safety? ', N'Being Safe', N'Being Careless', N'Being Careful', N'Being in Dangerous', 1, N'Nothing to say', 1, 10)
    SET IDENTITY_INSERT [dbo].[Question] OFF
    /****** Object:  Table [dbo].[UserQuiz]    Script Date: 11/17/2011 00:44:38 ******/
    CREATE TABLE [dbo].[UserQuiz](
        [UserQuizID] [int] NULL,
        [QuizID] [int] NOT NULL,
        [DateTimeComplete] [smalldatetime] NOT NULL,
        [Score] [tinyint] NOT NULL,
        [Username] [nvarchar](256) NOT NULL
    ) ON [PRIMARY]
    GO
    INSERT [dbo].[UserQuiz] ([UserQuizID], [QuizID], [DateTimeComplete], [Score], [Username]) VALUES (NULL, 6, CAST(0x9F8F02D8 AS SmallDateTime), 100, N'SMP\ALMARHMS')
    INSERT [dbo].[UserQuiz] ([UserQuizID], [QuizID], [DateTimeComplete], [Score], [Username]) VALUES (NULL, 6, CAST(0x9F8F02E3 AS SmallDateTime), 50, N'SMP\ALMARHMS')
    INSERT [dbo].[UserQuiz] ([UserQuizID], [QuizID], [DateTimeComplete], [Score], [Username]) VALUES (NULL, 6, CAST(0x9F8F0333 AS SmallDateTime), 50, N'SMP\ALMARHMS')
    INSERT [dbo].[UserQuiz] ([UserQuizID], [QuizID], [DateTimeComplete], [Score], [Username]) VALUES (NULL, 7, CAST(0x9F8F0335 AS SmallDateTime), 100, N'SMP\ALMARHMS')

在这个伟大社区的其中一个人的帮助下，我想出了一个查询，显示每个测验中的参与者数量。这是查询：

SELECT
(SELECT COUNT(DISTINCT Q.UserName)  
 FROM dbo.UserQuiz Q  
 WHERE DateTimeComplete >= DATEADD(dd, -7, DATEADD(day, DATEDIFF(day, 0, GETDATE()), 0)))
 as ParticipantsLast7Days,
(SELECT COUNT(DISTINCT Q.UserName)  
 FROM dbo.UserQuiz Q  
 WHERE DateTimeComplete >= DATEADD(dd, -30, DATEADD(day, DATEDIFF(day, 0, GETDATE()), 0)))
 as ParticipantsLast30Days,
(SELECT COUNT(Q.QuizID)  
 FROM dbo.UserQuiz Q  
 WHERE Q.DateTimeComplete >= DATEADD(dd, -7, DATEADD(day, DATEDIFF(day, 0, GETDATE()), 0)))
 as QuizzesLast7Days,
(SELECT COUNT(Q.QuizID)  
 FROM dbo.UserQuiz Q  
 WHERE Q.DateTimeComplete >= DATEADD(dd, -30, DATEADD(day, DATEDIFF(day, 0, GETDATE()), 0)))
 as QuizzesLast30Days

现在我需要对其进行修改或提出新的查询，以便给出以上两点。我怎么能这样做？

Answer 1

参加者数量#Taken Quizzes

select datename(month, datetimecomplete)+' '+ cast(count(distinct username) as varchar) +' '+ cast(count(distinct quizid) as varchar) Quizzes from userquiz group by datename(month, datetimecomplete)

年度参与者数量#Taken Quizzes

select datename(year, datetimecomplete)+' '+ cast(count(distinct username) as varchar) +' '+ cast(count(distinct quizid) as varchar) Quizzes from userquiz group by datename(year, datetimecomplete)

如何显示此测验引擎的每个月和每年的参与者总数和测验？

参加者数量#Taken Quizzes

年度参加者数量#Taken Quizzes

1 个答案: