我想將ROLLUP與PIVOT結合 - 是一種選擇嗎？

Question

我一直在使用

SELECT 
    Author, 
    ISNULL(MAX(CASE Status WHEN 'Duplicate' THEN NumDocs END),'') AS Duplicate, 
    ISNULL(MAX(CASE Status WHEN 'Failure' THEN NumDocs END),'') AS Failure, 
    ISNULL(MAX(CASE Status WHEN 'Rejected' THEN NumDocs END),'') AS Rejected, 
    ISNULL(MAX(CASE Status WHEN 'Success' THEN NumDocs END),'') AS Success, 
    ISNULL(MAX(CASE Status WHEN 'TOTAL' THEN NumDocs END),'') AS TOTAL 
FROM  
    (SELECT 
     CASE WHEN (GROUPING(Author)=1) THEN 'ALL' 
      ELSE ISNULL(Author,'UNKNOWN') END AS Author, 
     CASE WHEN (GROUPING(Status)=1) THEN 'TOTAL' 
      ELSE ISNULL(Status ,'UNKNOWN') END AS [Status], 
     COUNT(Status) AS NumDocs 
    FROM 
     tbl_Document D 
    LEFT JOIN 
     tbl_Status S 
      ON 
       D.status_id = S.status_id 
    GROUP BY 
     Author, 
     Status 
    WITH ROLLUP) BASE 
GROUP BY 
    Author 

要變換：

[Author] [Status] 
Alan  SUCCESS 
Bob  FAILURE 
Bob  SUCCESS 
Charles SUCCESS 
Dave  FAILURE 
Dave  DUPLICATE 

TO：

[Author] [SUCCESS] [FAILURE] [DUPLICATE] [TOTALS] 
Alan  1   0   0   1 
Bob   1   1   0   2 
Charles  1   0   0   1 
Dave  0   1   1   2 
TOTAL  3   2   1   6 

我能接近使用PIVOT聲明中輸出，但我不知道如何獲得TOTAL行/列？

SELECT 
    * 
FROM 
    (SELECT Author, status_id FROM tbl_Document) d 
PIVOT 
    (COUNT(status_id) FOR status_id IN ([1],[3],[5],[6])) p 

給出：

[Author] [SUCCESS] [FAILURE] [DUPLICATE] 
Alan  1   0   0  
Bob   1   1   0  
Charles  1   0   0  
Dave  0   1   1  

我猜我需要把彙總成一個子查詢的地方...？

Answer 1

您沒有發佈表架構，所以我試圖推斷它。我從你給出的輸入開始（參見最裏面的SELECT中的評論），所以你應該能夠適應你的實際模式。我包含了一個沒有任何文檔的額外作者，因爲我想你想在最終報告輸出中看到這些作者。排除這些作者是微不足道的。

DECLARE @Status table 
(
    Id int NOT NULL, 
    Status nvarchar(50) NOT NULL 
) 

DECLARE @Authors table 
(
    Id int NOT NULL, 
    Name nvarchar(50) NOT NULL 
) 

DECLARE @Documents table 
(
    Id int NOT NULL, 
    AuthorId int NOT NULL, 
    StatusId int NOT NULL 
) 

INSERT INTO @Status VALUES (1, 'Duplicate') 
INSERT INTO @Status VALUES (2, 'Failure') 
INSERT INTO @Status VALUES (3, 'Rejected') 
INSERT INTO @Status VALUES (4, 'Success') 

INSERT INTO @Authors VALUES (1, 'Alan') 
INSERT INTO @Authors VALUES (2, 'Bob') 
INSERT INTO @Authors VALUES (3, 'Charles') 
INSERT INTO @Authors VALUES (4, 'Dave') 
INSERT INTO @Authors VALUES (5, 'Tom') -- Test for authors without documents 

INSERT INTO @Documents VALUES (1, 1, 4) 
INSERT INTO @Documents VALUES (2, 2, 2) 
INSERT INTO @Documents VALUES (3, 2, 4) 
INSERT INTO @Documents VALUES (4, 3, 4) 
INSERT INTO @Documents VALUES (5, 4, 2) 
INSERT INTO @Documents VALUES (6, 4, 1) 

SELECT 
    (CASE WHEN GROUPING(Name) = 1 THEN 'Total' ELSE Name END) AS Author, 
    SUM(Duplicate) AS Duplicate, 
    SUM(Failure) AS Failure, 
    SUM(Rejected) AS Rejected, 
    SUM(Success) AS Success, 
    SUM(Duplicate + Failure + Rejected + Success) AS Total 
    FROM 
    (
     SELECT 
      Name, 
      (CASE WHEN Status = 'Duplicate' THEN 1 ELSE 0 END) AS Duplicate, 
      (CASE WHEN Status = 'Failure' THEN 1 ELSE 0 END) AS Failure, 
      (CASE WHEN Status = 'Rejected' THEN 1 ELSE 0 END) AS Rejected, 
      (CASE WHEN Status = 'Success' THEN 1 ELSE 0 END) AS Success 
      FROM 
      (
       -- Original input 
       SELECT 
        a.Name, 
        s.Status 
        FROM @Authors a 
        LEFT OUTER JOIN @Documents d ON d.AuthorId = a.Id 
        LEFT OUTER JOIN @Status s ON d.StatusId = s.Id 
      ) i 
    ) j 
    GROUP BY Name WITH ROLLUP 

輸出：

Author Duplicate Failure Rejected Success Total 
Alan  0   0  0   1  1 
Bob  0   1  0   1  2 
Charles 0   0  0   1  1 
Dave  1   1  0   0  2 
Tom  0   0  0   0  0 
Total 1   2  0   3  6