Combine multiple rows into multiple columns dynamically in SQL Server

Question

I have a large database table on which I need to perform the action below dynamically using Microsoft SQL Server.

From a result like this:

 badge   |         


        

Answer 1

I would do it using dynamic sql, but this is (http://sqlfiddle.com/#!6/a63a6/1/0) the PIVOT solution:

SELECT badge, name, [AP_KDa], [AP_Match], [ADC_KDA],[ADC_Match],[TOP_KDA],[TOP_Match] FROM
(
SELECT badge, name, col, val FROM(
 SELECT *, Job+'_KDA' as Col, KDA as Val FROM @T 
 UNION
 SELECT *, Job+'_Match' as Col,Match as Val  FROM @T
) t
) tt
PIVOT ( max(val) for Col in ([AP_KDa], [AP_Match], [ADC_KDA],[ADC_Match],[TOP_KDA],[TOP_Match]) ) AS pvt

Bonus: This how PIVOT could be combined with dynamic SQL (http://sqlfiddle.com/#!6/a63a6/7/0), again I would prefer to do it simpler, without PIVOT, but this is just good exercising for me :

SELECT badge, name, cast(Job+'_KDA' as nvarchar(128)) as Col, KDA as Val INTO #Temp1 FROM Temp 
INSERT INTO #Temp1 SELECT badge, name, Job+'_Match' as Col, Match as Val FROM Temp

DECLARE @columns nvarchar(max)
SELECT @columns = COALESCE(@columns + ', ', '') + Col FROM #Temp1 GROUP BY Col

DECLARE @sql nvarchar(max) = 'SELECT badge, name, '+@columns+' FROM #Temp1 PIVOT ( max(val) for Col in ('+@columns+') ) AS pvt'
exec (@sql)

DROP TABLE #Temp1