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SQL 2008行列转换的pivot [sql] IF OBJECT_ID('tempdb..#ABC') IS NOT NULL DROP TABLE #ABC create table #ABC ( ID INT ,UserID BIGINT ,UserExamID INT ,TestPaperID INT ,QuestionID INT ,AnswerID INT ,Ctime DATETIME ) INSERT INTO #ABC SELECT 1,120629210042331600,1,3,22,49,GETDATE() UNION ALL SELECT 2,120629210042331600,1,3,23,51,GETDATE() UNION ALL SELECT 3,120629210042331600,1,3,24,56,GETDATE() UNION ALL SELECT 4,120629210042331600,1,3,25,62,GETDATE() UNION ALL SELECT 5,120629210042331600,1,3,26,66,GETDATE() UNION ALL SELECT 6,120629210042331600,1,3,27,72,GETDATE() UNION ALL SELECT 7,120629210042331600,1,3,28,77,GETDATE() UNION ALL SELECT 8,120629210042331600,1,3,29,81,GETDATE() UNION ALL SELECT 9,120629210042331600,1,3,30,86,GETDATE() UNION ALL SELECT 10,120629210042331600,1,3,31,90,GETDATE() UNION ALL SELECT 1,120629210011732588,1,3,22,49,GETDATE() UNION ALL SELECT 2,120629210011732588,1,3,23,51,GETDATE() UNION ALL SELECT 3,120629210011732588,1,3,24,56,GETDATE() UNION ALL SELECT 4,120629210011732588,1,3,25,62,GETDATE() UNION ALL SELECT 5,120629210011732588,1,3,26,66,GETDATE() UNION ALL SELECT 6,120629210011732588,1,3,27,72,GETDATE() UNION ALL SELECT 7,120629210011732588,1,3,28,77,GETDATE() UNION ALL SELECT 8,120629210011732588,1,3,29,81,GETDATE() UNION ALL SELECT 9,120629210011732588,1,3,30,86,GETDATE() UNION ALL SELECT 10,120629210011732588,1,3,31,90,GETDATE() SELECT * FROM #ABC 
[sql]
DECLARE @s NVARCHAR(4000)
SELECT @s = ISNULL(@s + ',', '') + QUOTENAME(QuestionID)
FROM (select distinct QuestionID from #ABC) as A ---列名不要重复
Declare @sql NVARCHAR(4000)
SET @sql='
select r.* from
(select UserID,QuestionID,AnswerID from #ABC) as t
pivot
(
max(t.AnswerID)
for t.QuestionID in ('+@s+')
) as r'
EXEC( @sql)  |