Count by unique ID, group by another - sql

Question

I've inherited some scripts that count the number of people in a team by department; the current scripts create a table for each individual department and the previous user would copy/paste the data into Excel. I've been tasked to pull this report into SSRS so I need one table for all the departments by team.
Current Table
+-------+-----------+---------+
| Dept | DataMatch | Team |
+-------+-----------+---------+
| 01 | 4687Joe | Dodgers |
| 01 | 3498Cindy | RedSox |
| 01 | 1057Bob | Yankees |
| 01 | 0497Lucy | Dodgers |
| 02 | 7934Jean | Yankees |
| 02 | 4584Tom | Dodgers |
+-------+-----------+---------+
Desired Results
+-------+---------+--------+---------+
| Dept | Dodgers | RedSox | Yankees |
+-------+---------+--------+---------+
| 01 | 2 | 1 | 1 |
| 02 | 1 | 0 | 1 |
+-------+---------+--------+---------+
The DataMatch field is the unique identifier I will be counting. I started by wrapping each department in a CTE however this results in the Dept as the Column which would not work for my report, so I need to transpose my results and I haven't been able to figure that out. There are 60 departments and my query was getting very long.
Current query
SELECT Dept, DataMatch, Team INTO #temp_Team
FROM TeamDatabase
WHERE Status = 14
AND Team <> 'Missing'
;WITH A_cte (Team, Dept01)
AS
(
SELECT Team
, COUNT(DISTINCT datamatch) AS 'Dept01'
FROM #temp_Team
WHERE Dept = '01'
GROUP BY Team
),
B_cte (Team, Dept02) AS
(
SELECT Team
, COUNT(DISTINCT datamatch) AS 'Dept02'
FROM #temp_Team
WHERE Dept = '02'
GROUP BY Team
)
SELECT A_cte.Team
, A_cte.Dept01
, B_cte.Dept02
FROM A_cte
INNER JOIN B_cte
ON A_cte.Team=B_cte.Team
Which results in:
+----------------------------+-------+-------+
| Team | Prg01 | Prg02 |
+----------------------------+-------+-------+
| RedSox | 144 | 141 |
| Yankees | 63 | 236 |
| Dodgers | 298 | 196 |
+----------------------------+-------+-------+
I feel that using a pivot on my already very long query would be excessive and impact performance, 60 departments with over 30,000 rows.
What, mostly likely basic, step am I missing?
TL;DR - How do I count people by team and list by department?

Answer 1

I would replace the whole query with a dynamic pivot instead of adding a pivot to your CTEs.
You can add your Status/Team conditions to the SELECT inside the dynamic query at the bottom. They would be WHERE STATUS=14 AND TEAM !=''MISSING'' - note that is two single quotes to nest it within the string.
IF OBJECT_ID('tempdb..#data') IS NOT NULL DROP TABLE #data
CREATE TABLE #data (Dept VARCHAR(50), DataMatch NVARCHAR(50), Team VARCHAR(50))
INSERT INTO #data (Dept, DataMatch, Team)
VALUES ('01', '4687Joe','Dodgers'),
('01', '3498Cindy','RedSox'),
('01', '1057Bob','Yankees'),
('01', '0497Lucy','Dodgers'),
('02', '7934Jean','Yankees'),
('02', '4584Tom','Dodgers')
DECLARE #cols AS NVARCHAR(MAX),
#sql AS NVARCHAR(MAX)
SET #cols = STUFF(
(SELECT N',' + QUOTENAME(y) AS [text()]
FROM (SELECT DISTINCT Team AS y FROM #data) AS Y
ORDER BY y
FOR XML PATH('')),
1, 1, N'');
SET #sql = 'SELECT Dept, '+#cols+'
FROM (SELECT Dept, DataMatch, Team
FROM #data D) SUB
PIVOT (COUNT([DataMatch]) FOR Team IN ('+#cols+')) AS P'
PRINT #SQL
EXEC (#SQL)
In case you don't want to use a dynamic pivot, here is just a stand-alone query... again, add your conditions as you need.
SELECT Dept, Dodgers, RedSox, Yankees
FROM (SELECT Dept, DataMatch, Team
FROM #data D) SUB
PIVOT (COUNT([DataMatch]) FOR Team IN ([Dodgers], [RedSox], [Yankees])) AS P

Answer 2

I'm not sure I follow what relevance your existing query has, but to get from your current table to your desired results is a pretty straightforward usage of PIVOT:
SELECT *
FROM Table1
PIVOT(COUNT(DataMatch) FOR Team IN (Dodgers,RedSox,Yankees))pvt
Demo: SQL Fiddle
And this of course could be done dynamically if the teams list isn't static.