I would like to combine ROLLUP with PIVOT - is that an option? - sql

Question

I have been using
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
To transform:
[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
I can get close to this output using a PIVOT statement, but I'm not sure how to get the TOTAL row/column?
SELECT
*
FROM
(SELECT Author, status_id FROM tbl_Document) d
PIVOT
(COUNT(status_id) FOR status_id IN ([1],[3],[5],[6])) p
Gives:
[Author] [SUCCESS] [FAILURE] [DUPLICATE]
Alan 1 0 0
Bob 1 1 0
Charles 1 0 0
Dave 0 1 1
I'm guessing I need to put the ROLLUP into a subquery somewhere...?

Answer 1

You didn't post the table schema, so I tried to infer it. I started with the input you gave (see the comment in the innermost SELECT), so you should be able to adapt this to your actual schema. I included an extra author without any documents, because I figured you'd want to see those in the final report output. It's trivial to exclude those authors.
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
Output:
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