SQL Query to combine results and show in a PIVOT - sql

Question

Below mentioned are the two of my queries:
SELECT WINDOWS_NT_LOGIN, COUNT(DPS_NUMBER) as TotalDPS
FROM DispatcherProductivity
WHERE DPS_Processed_Time_Stamp>='12/04/2014 10:30 AM'
AND DPS_Processed_Time_Stamp<='12/05/2014 10:30 AM'
GROUP BY WINDOWS_NT_LOGIN
ORDER BY TotalDPS
SELECT STATUS, COUNT(DPS_NUMBER) AS TotalDPS
FROM DispatcherProductivity
WHERE DPS_Processed_Time_Stamp>='12/04/2014 10:30 AM'
AND DPS_Processed_Time_Stamp<='12/05/2014 10:30 AM'
GROUP BY STATUS
ORDER BY TotalDPS
Their respective Results are:
WINDOWS_NT_LOGIN TotalDPS
A_S 72
T_I_S 133
STATUS TotalDPS
ID 1
Can 2
NHD 3
SED 14
Ord 185
I would like to get the results in this format:
WINDOWS_NT_LOGIN ID Can NHD SED Ord
A_S 2 70
T_I_S 1 2 3 12 115
Thanks

Answer 1

You can use the PIVOT function for this:
SELECT pvt.WINDOWS_NT_LOGIN,
pvt.[ID],
pvt.[Can],
pvt.[NHD],
pvt.[SED],
pvt.[Ord]
FROM ( SELECT WINDOWS_NT_LOGIN, STATUS, DPS_NUMBER
FROM DispatcherProductivity
WHERE DPS_Processed_Time_Stamp>='20141204 10:30:00'
AND DPS_Processed_Time_Stamp<='20141205 10:30:00'
) AS t
PIVOT
( COUNT(DPS_NUMBER)
FOR STATUS IN ([ID], [Can], [NHD], [SED], [Ord])
) AS pvt;
N.B. I changed your dates to the culture invariant format yyyyMMdd hh:mm:ss, however, I was not sure if 12/04/2014 was supposed to tbe 12th April, or 4th December (the exact problem with that format), so it is possible I have put the wrong dates in. I assumed you meant 4th December as that is today.
For further reading read Bad habits to kick : mis-handling date / range queries

Answer 2

I tend to use conditional aggregations for pivots. In this case:
SELECT WINDOWS_NT_LOGIN, COUNT(DPS_NUMBER) as TotalDPS,
SUM(CASE WHEN status = 'ID' THEN DPS_Number END) as ID,
SUM(CASE WHEN status = 'Can' THEN DPS_Number END) as Can,
SUM(CASE WHEN status = 'NHD' THEN DPS_Number END) as NHD,
SUM(CASE WHEN status = 'SED' THEN DPS_Number END) as SED,
SUM(CASE WHEN status = 'Ord' THEN DPS_Number END) as Ord
FROM DispatcherProductivity
WHERE DPS_Processed_Time_Stamp >= '12/04/2014 10:30 AM' AND
DPS_Processed_Time_Stamp <= '12/05/2014 10:30 AM'
GROUP BY WINDOWS_NT_LOGIN;
I would also recommend that you use YYYY-MM-DD format for your dates. I, for one, don't know if your dates are for December or April and May.