我几周来一直在努力解决这个问题，进行各种数据库更改以帮助使查询正常工作。
这是我的持续调查任务。
最后一项任务是显示任何个人确定的结果。
查询是列出每个多项选择题，然后是用户的选择和正确的答案，具体取决于问题是否是复选框问题，而不是答案作为正确答案。
然后，下一行是计算回答的总问题数，用户得出的答案总数和正确答案的百分比。
以下是总体布局：
Question Your Choice Correct Answer
Total Questions:_________ You got _X out of _X number %Correct:____x%
由于复杂性，我已将sql查询分解为3.每个查询的第一个查询列表。第二个列出用户选择，第三个列出正确的答案。
全部按SurveyId和用户名
过滤到目前为止，这很好。
我最困难的领域是计算总问题，有多少用户从总问题和百分比中获得。
以下是我的查询。我应该在今天下午给出这个调查的演示。
我希望你们慷慨的SQL天才可以帮助我。
SELECT Q.QUESTION,
Sum(CASE
WHEN A.CHOICEID IS NOT NULL
AND C.ISCORRECT = 'True' THEN 1
ELSE 0
END - CASE
WHEN Q.ANSWERTYPE = 'M'
AND A.CHOICEID IS NOT NULL
AND C.ISCORRECT = 'False' THEN 1
ELSE 0
END) / ( CASE Q.ANSWERTYPE
WHEN 'S' THEN 1
WHEN 'M' THEN Sum(CASE
WHEN C.ISCORRECT = 'True' THEN 1
ELSE 0
END)
END ) AS score
FROM SURVEYQUESTIONS AS Q
INNER JOIN SURVEY AS S
ON Q.SURVEYID = S.SURVEYID
INNER JOIN SURVEYCHOICES AS C
ON Q.QUESTIONID = C.QUESTIONID
LEFT JOIN SURVEYANSWERS AS A
ON A.QUESTIONID = C.QUESTIONID
LEFT JOIN SURVEYANSWERS AS sa
ON C.CHOICEID = A.CHOICEID
AND A.USERNAME = @UserName
WHERE S.SURVEYID = @SurveyId
GROUP BY Q.QUESTION,
Q.ANSWERTYPE;
如果需要，我很乐意发布表结构。
提前多多感谢
答案 0 :(得分：0)
我试图告诉你如何做到这一点，虽然我不完全确定列名和结果列：
with SingleAnswers (QuestionID,SurveyID,Username,TotalSingle)
as(
Select
SQ.QuestionID,S.SurveyID, Username,count(*)TotalSingle
from
SurveyAnswers SA
join
surveychoices SC on SA.choiceId = SC.choiceId
join
surveyquestions SQ on SQ.QuestionID = SC.QuestionID
JOIN
Survey S ON SQ.SurveyID = S.SurveyID
where
SA.ChoiceID is Not Null and username = @UserName and SC.iscorrect='True' and SQ.AnswerType='S'
group by
SQ.QuestionID,S.SurveyID, Username)
,MultipleAnswers (QuestionID,SurveyID,Username,TotalMultiple)
as(
Select
SQ.QuestionID,S.SurveyID, Username,count(*)TotalMultiple
from
SurveyAnswers SA
join
surveychoices SC on SA.choiceId = SC.choiceId
join
surveyquestions SQ on SQ.QuestionID = SC.QuestionID
JOIN
Survey S ON SQ.SurveyID = S.SurveyID
where
SA.ChoiceID is Not Null and username = @UserName and SC.iscorrect='True' and SQ.AnswerType='M'
group by
SQ.QuestionID,S.SurveyID, Username)
select
count(Q.QuestionID) TotalQuestions,'You got '+Convert(Varchar,sum(TotalSingle) +sum(TotalMultiple))+'out of '+Convert(Varchar,count(Q.QuestionID))+' number' FinalOutCome,(count(Q.QuestionID)/sum(TotalSingle)+sum(TotalMultiple)) Correct_Percent
from
surveyquestions AS Q
JOIN
Survey AS S ON Q.SurveyID = S.SurveyID
LEFT JOIN
SingleAnswers SA ON SA.QuestionID = Q.QuestionID AND SA.SurveyID = S.SurveyID
LEFT JOIN
MultipleAnswers MA ON MA.QuestionID = Q.QuestionID AND SA.SurveyID = S.SurveyID
答案 1 :(得分：0)
您的SQLFiddle示例只有一个调查答案，这不是调查10的一部分。我已经为新的SQL Fiddle添加了一个正确的答案。我认为最后的查询可以让你得到你想要的东西，而且非常简单。
下面的SQL小提琴详情：
MS SQL Server 2008架构设置：
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[SurveyQuestions]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[SurveyQuestions](
[QuestionID] [int] IDENTITY(1,1) NOT NULL,
[SurveyID] [int] NULL,
[Question] [varchar](255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[AnswerType] [char](1) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[QuestionOrder] [int] NULL,
CONSTRAINT [PK_SurveyQuestions_1] PRIMARY KEY CLUSTERED
(
[QuestionID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
)
END
GO
SET IDENTITY_INSERT [dbo].[SurveyQuestions] ON
INSERT [dbo].[SurveyQuestions] ([QuestionID], [SurveyID], [Question], [AnswerType], [QuestionOrder]) VALUES (8, 10, N'Archaeological studies of the Indus Valley cities of Harappa and Mohenjo-Daro show evidence of.', N'S', 1)
INSERT [dbo].[SurveyQuestions] ([QuestionID], [SurveyID], [Question], [AnswerType], [QuestionOrder]) VALUES (9, 10, N'Between 1540 and 1580, what happened to the native population of Central Mexico?', N'M', 2)
INSERT [dbo].[SurveyQuestions] ([QuestionID], [SurveyID], [Question], [AnswerType], [QuestionOrder]) VALUES (11, 9, N'What is Avalon?', N'S', 1)
INSERT [dbo].[SurveyQuestions] ([QuestionID], [SurveyID], [Question], [AnswerType], [QuestionOrder]) VALUES (13, 8, N'What is your quest?', N'S', 2)
INSERT [dbo].[SurveyQuestions] ([QuestionID], [SurveyID], [Question], [AnswerType], [QuestionOrder]) VALUES (14, 11, N'How do you like this video', N'S', 1)
INSERT [dbo].[SurveyQuestions] ([QuestionID], [SurveyID], [Question], [AnswerType], [QuestionOrder]) VALUES (15, 11, N'Your favorite movie', N'M', 2)
INSERT [dbo].[SurveyQuestions] ([QuestionID], [SurveyID], [Question], [AnswerType], [QuestionOrder]) VALUES (16, 10, N'George Boole is a:', N'M', 3)
SET IDENTITY_INSERT [dbo].[SurveyQuestions] OFF
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[Survey]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[Survey](
[SurveyID] [int] IDENTITY(1,1) NOT NULL,
[Title] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[Description] [varchar](max) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
CONSTRAINT [PK_Survey] PRIMARY KEY CLUSTERED
(
[SurveyID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
)
END
GO
SET IDENTITY_INSERT [dbo].[Survey] ON
INSERT [dbo].[Survey] ([SurveyID], [Title], [Description]) VALUES (8, N'The Bridge of Death', N'Test your knowledge of this classic scene from a classic movie.')
INSERT [dbo].[Survey] ([SurveyID], [Title], [Description]) VALUES (9, N'What''s Next at Microsoft?', N'Reading your blogs? Test your knowledge about what''s baking in Microsoft''s oven.')
INSERT [dbo].[Survey] ([SurveyID], [Title], [Description]) VALUES (10, N'Movie History', N'Test your knowledge of movies')
SET IDENTITY_INSERT [dbo].[Survey] OFF
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[SurveyChoices]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[SurveyChoices](
[ChoiceID] [int] IDENTITY(1,1) NOT NULL,
[QuestionID] [int] NOT NULL,
[Choice] [nvarchar](255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[IsCorrect] [bit] NULL,
CONSTRAINT [PK_SurveyChoices] PRIMARY KEY CLUSTERED
(
[ChoiceID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
)
END
GO
SET IDENTITY_INSERT [dbo].[SurveyChoices] ON
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (56, 8, N'dynastic rule', 1)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (57, 8, N'monotheism', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (58, 8, N'social equality', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (59, 8, N'urban planning', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (60, 9, N'It decreased by approximately 6 million people.', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (61, 9, N'It increased to a high of 26 million people.', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (62, 9, N'It increased by approximatley 2 million people per year.', 1)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (63, 9, N'It decreased to 8 million people.', 1)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (64, 11, N'Build UI with XAML', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (65, 11, N'Next Generation Web Services', 1)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (66, 11, N'Next Version of Office', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (67, 11, N'Codename for Xbox 360', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (89, 13, N'To seek the Holy Grail', 1)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (90, 13, N'To seek the Holy Hand Grenade', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (91, 13, N'To see the Knight that says Ni!', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (92, 13, N'To sing the Ballad of Brave Sir Robin', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (93, 14, N'Bad', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (94, 14, N'Ok', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (95, 14, N'Good', 0)
INSERT [dbo].[SurveyChoices] ([ChoiceID], [QuestionID], [Choice], [IsCorrect]) VALUES (97, 14, N'Excellent', 1)
SET IDENTITY_INSERT [dbo].[SurveyChoices] OFF
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[SurveyAnswers]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[SurveyAnswers](
[AnswerID] [int] IDENTITY(1,1) NOT NULL,
[QuestionID] [int] NOT NULL,
[ChoiceID] [int] NULL,
[ChoiceText] [varchar](max) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[UserName] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
CONSTRAINT [PK_SurveyAnswers] PRIMARY KEY CLUSTERED
(
[AnswerID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
)
END
GO
SET IDENTITY_INSERT [dbo].[SurveyAnswers] ON
INSERT [dbo].[SurveyAnswers] ([AnswerID], [QuestionID], [ChoiceID], [ChoiceText], [UserName]) VALUES (51, 14, 95, NULL, N'John.Doe')
INSERT [dbo].[SurveyAnswers] ([AnswerID], [QuestionID], [ChoiceID], [ChoiceText], [UserName]) VALUES (52, 9, 62, NULL, N'John.Doe')
SET IDENTITY_INSERT [dbo].[SurveyAnswers] OFF
查询1 ：
SELECT SUM(CASE WHEN SC.IsCorrect = 1 THEN 1 ELSE 0 END) AS TotalQuestions,
COUNT(SA.AnswerID) AS TotalCorrect,
CAST(COUNT(SA.AnswerID) AS Float) /
SUM(CASE WHEN SC.IsCorrect = 1 THEN 1 ELSE 0 END) * 100 As Percentage
FROM
SurveyQuestions SQ
INNER JOIN SurveyChoices SC
ON SQ.QuestionId = SC.QuestionID
LEFT JOIN SurveyAnswers SA
ON SA.QuestionId = SC.QuestionID
AND SA.ChoiceID = SC.ChoiceID
AND SA.UserName = 'John.Doe'
WHERE SC.IsCorrect = 1
AND SQ.SurveyID = 10
<强> Results ：
| TOTALQUESTIONS | TOTALCORRECT | PERCENTAGE |
---------------------------------------------------
| 3 | 1 | 33.333333333333 |