PIVOT help on SQL Server 2008 R2? - tsql

Question

Input follows :
MID NAME ACTIVESTATUS DID DNAME STATUS
1A SRN ACTIVE 1 FEEVER NEW
1A SRN ACTIVE 2 MOTIONS ACTIVE
1A SRN ACTIVE 3 SUGAR INVALIDCODE
1A SRN ACTIVE 4 BP ACTIVE-PRIMARY
Expected Output would be like :
MID NAME ACTIVESTATUS FEVERSTATUS MOTIONSTAUS SUGATSTATUS BPSTATUS
1 SRN ACTIVE NEW ACTIVE INVALIDCODE ACTIVE-PRIMARY

Answer 1

It is actually very simple:
SELECT mid,
name,
activestatus,
MAX (CASE dname WHEN 'FEEVER' THEN status ELSE NULL END) AS feverstatus,
MAX (CASE dname WHEN 'MOTIONS' THEN status ELSE NULL END)
AS motionstatus,
MAX (CASE dname WHEN 'INVALIDCODE' THEN status ELSE NULL END)
AS sugarstatus,
MAX (CASE dname WHEN 'BP' THEN status ELSE NULL END) AS bpstatus
FROM myTable
GROUP BY mid, name, activestatus;
You will get your expected output.

Answer 2

Please try this
Test Data
DECLARE #Table TABLE (MID VARCHAR(2),NAME VARCHAR(3),ACTIVESTATUS VARCHAR(10),DID TINYINT,DNAME VARCHAR(7),STATUS VARCHAR(20))
INSERT INTO #Table(MID,NAME,ACTIVESTATUS,DID,DNAME,STATUS) VALUES
('1A','SRN','ACTIVE','1','FEEVER','NEW'),
('1A','SRN','ACTIVE','2','MOTIONS','ACTIVE'),
('1A','SRN','ACTIVE','3','SUGAR','INVALIDCODE'),
('1A','SRN','ACTIVE','4','BP','ACTIVE-PRIMARY')
Using Pivot
SELECT MID,
NAME,
ACTIVESTATUS,
[FEEVER] AS FEVERSTATUS,
[MOTIONS] AS MOTIONSTAUS,
[SUGAR] AS SUGATSTATUS,
[BP] AS BPSTATUS
FROM (
SELECT LEFT(MID,1) AS MID,
NAME,
ACTIVESTATUS,
DNAME,
STATUS
FROM #Table t
) a
PIVOT(
MIN(STATUS)FOR DNAME in ([FEEVER],[MOTIONS],[SUGAR],[BP])
)piv
Without using Pivot
SELECT DISTINCT
(
SELECT TOP 1 LEFT(MID, 1)
FROM #Table t
WHERE tt.MID=t.MID
) AS MID,
(
SELECT TOP 1 NAME
FROM #Table t
WHERE tt.MID=t.MID
) AS NAME,
(
SELECT TOP 1 ACTIVESTATUS
FROM #Table t
WHERE tt.MID=t.MID
) AS ACTIVESTATUS,
(
SELECT TOP 1 STATUS
FROM #Table t
WHERE tt.MID=t.MID
AND t.DID =1
) AS FEVERSTATUS,
(
SELECT TOP 1 STATUS
FROM #Table t
WHERE tt.MID=t.MID
AND t.DID =2
) AS MOTIONSTAUS,
(
SELECT TOP 1 STATUS
FROM #Table t
WHERE tt.MID=t.MID
AND t.DID =3
) AS SUGATSTATUS,
(
SELECT TOP 1 STATUS
FROM #Table t
WHERE tt.MID=t.MID
AND t.DID =4
) AS BPSTATUS
FROM #Table tt

Answer 3

Try this:
SELECT mid,
NAME,
activestatus,
feever AS feverstatus,
motions AS motionstatus,
sugar AS sugarstatus,
bp AS bpstatus
FROM (
SELECT mid,
NAME,
activestatus,
dname,
[status]
FROM tbl
) s
PIVOT(
MAX([status])
FOR dname IN ([FEEVER], [MOTIONS], [SUGAR], [BP])
) p
Demo
Note that this solution assumes that the only possible values for dname are the ones included in the PIVOT clause. If the values are not going to be the above 4 for every mid, then you will need to generate that list first using dynamic SQL and then do a pivot operation.