如何显示此测验引擎每个月和每年的参与者总数和参加测验的总数？

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 ASP.net 网站上的如何构建测验引擎视频系列。我的数据库设计与这些视频中使用的设计相似。 这是link of the first video： http://www.asp.net/general/videos/lesson-11-building-a-quiz-engine-1[^]

对我来说一切正常，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：

1. 每个月参与者和参加测验的总人数
2. 每年参加和参加测验的总人数
3. 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：

参加者月数 # 参加测验数

11 月 15 日 6 10 月 10 日 9 日

另一个例子：

参加者的年份 # 参加测验的次数

2011 150 89

我认为这样的事情对于了解系统的使用情况以及向管理层展示系统在公司中的效率非常有用。

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')

在这个伟大社区中的一个人的帮助下，我想出了一个查询，显示每个测验的参与者人数。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一个新的查询来满足上述两点。我该怎么做？

Answer 1

参加者月数 #参加测验数

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

参加者的年份#参加测验的次数

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