選擇ID從表中的文本到視圖

Question

我有一個查看從表問題和表答案採取列。表問題有id和問題文本，而表答案有id，question_id（表問題中的fk）和答案文本。

SELECT  
    QuestionID, QuestionTxt, [1], [2], [3], [4] 
FROM   
    (SELECT  
     ROW_NUMBER() OVER (PARTITION BY QuestionID 
          ORDER BY newid()) AnswerInQuestionID, 
     a.AnswerTxt, q.QuestionTxt, q.QuestionId 
    FROM   
     dbo.TblQuestion q 
    JOIN 
     dbo.TblAnswer a ON q.QuestionId = a.answer_question_id) A 
PIVOT (MAX(a.AnswerTxt) FOR AnswerInQuestionID IN ([1], [2], [3], [4])) AS piv 

從這個SQL，我能夠隨機化答案，但它只顯示文本。我希望將文本答案與它的ID一起使用

Answer 1

很難從你的問題告訴你在哪裏希望能得到AnswerID。如果你想在一個專欄中，你將需要使用@ StayPuft的答案。如果你想把它當作文本列的一部分，你可以使用下面的SQL：

SELECT questionText, [1], [2], [3] 
FROM 
(
    SELECT 
     ROW_NUMBER() OVER (PARTITION BY QuestionID ORDER BY newid()) AnswerInQuestionID, 
     CAST(AnswerID AS VARCHAR(20)) + ' - ' + answerTxt AS answerTxt, 
     QuestionText 
    FROM questions q 
     JOIN answers a 
      ON q.QuestionID=a.answer_question_id 
) A 
PIVOT 
(
    MAX(answerTxt) 
    FOR AnswerInQuestionID IN ([1], [2], [3]) 
) as piv 

如果你希望他們三個單獨的列，您可以使用下面的SQL：

SELECT 
    questionText, 
    LEFT([1], 1) AS AnswerID1, 
    RIGHT([1], LEN([1]) - 1) AS AnswerText1, 
    LEFT([2], 1) AS AnswerID2, 
    RIGHT([1], LEN([1]) - 1) AS AnswerText1, 
    LEFT([3], 1) AS AnswerID3, 
    RIGHT([2], LEN([3]) - 1) AS AnswerText3 
FROM 
(
    SELECT 
    ROW_NUMBER() OVER (PARTITION BY QuestionID ORDER BY newid()) AnswerInQuestionID, 
    CAST(AnswerID AS VARCHAR(20)) + answerTxt AS answerTxt, 
    QuestionText 
    FROM questions q 
    JOIN answers a 
    ON q.QuestionID=a.answer_question_id 
) A 
PIVOT 
(
    MAX(answerTxt) 
    FOR AnswerInQuestionID IN ([1], [2], [3]) 
) as piv 

編輯：添加了CHARINDEX（）函數和管道（'|'）以允許不同的數字長度。可能有這樣做的更簡潔的方式，但這個工作對我來說：

SELECT 
    questionText, 
    LEFT([1], CHARINDEX('|', [1]) -1) AS AnswerID1, 
    RIGHT([1], LEN([1]) - CHARINDEX('|', [1])) AS AnswerText1, 
    LEFT([2], CHARINDEX('|', [2]) -1) AS AnswerID2, 
    RIGHT([2], LEN([2]) - CHARINDEX('|', [2])) AS AnswerText2, 
    LEFT([3], CHARINDEX('|', [3]) -1) AS AnswerID3, 
    RIGHT([3], LEN([3]) - CHARINDEX('|', [3])) AS AnswerText3 
FROM 
(
    SELECT 
    ROW_NUMBER() OVER (PARTITION BY QuestionID ORDER BY newid()) AnswerInQuestionID, 
    CAST(AnswerID AS VARCHAR(20)) +'|'+ answerTxt AS answerTxt, 
    QuestionText 
    FROM questions q 
    JOIN answers a 
    ON q.QuestionID=a.answer_question_id 
) A 
PIVOT 
(
    MAX(answerTxt) 
    FOR AnswerInQuestionID IN ([1], [2], [3]) 
) as piv 

Answer 2

它看起來像a.AnswerTxt不在您的主要選擇中，只是QuestionID和QuestionTxt。在第一行添加a.AnswerTxt。

Answer 3

首先讓我說SQL小提琴真棒！

如果你想顯示的答案ID - 這是我做過什麼：

SELECT questionText, [1], [2], [3], answerID 
FROM 
(
    SELECT 
     ROW_NUMBER() OVER (PARTITION BY QuestionID ORDER BY newid()) AnswerInQuestionID, 
    answerTxt, 
    QuestionText, 
    answerID 
FROM questions q 
    JOIN answers a 
     ON q.QuestionID=a.answer_question_id 
    ) A 
    PIVOT 
    (
     MAX(answerTxt) 
     FOR AnswerInQuestionID IN ([1], [2], [3]) 
    ) as piv