我需要转动一列(Numbers列).
示例需要此数据：
示例需要此数据：
a 1 a 2 b 3 b 4 c 5 d 6 d 7 d 8 d 9 e 10 e 11 e 12 e 13 e 14
看起来像这样
a 1 2 b 3 4 c 5 d 6 7 8 9 e 10 11 12 13 14
任何帮助将不胜感激…
解决方法
使用ROW_NUMBER(),PIVOT和一些动态sql(但不需要游标)：
CREATE TABLE [dbo].[stackoverflow_198716](
[code] [varchar](1) NOT NULL,[number] [int] NOT NULL
) ON [PRIMARY]
DECLARE @sql AS varchar(max)
DECLARE @pivot_list AS varchar(max) -- Leave NULL for COALESCE technique
DECLARE @select_list AS varchar(max) -- Leave NULL for COALESCE technique
SELECT @pivot_list = COALESCE(@pivot_list + ',','') + '[' + CONVERT(varchar,PIVOT_CODE) + ']',@select_list = COALESCE(@select_list + ',PIVOT_CODE) + '] AS [col_' + CONVERT(varchar,PIVOT_CODE) + ']'
FROM (
SELECT DISTINCT PIVOT_CODE
FROM (
SELECT code,number,ROW_NUMBER() OVER (PARTITION BY code ORDER BY number) AS PIVOT_CODE
FROM stackoverflow_198716
) AS rows
) AS PIVOT_CODES
SET @sql = '
;WITH p AS (
SELECT code,ROW_NUMBER() OVER (PARTITION BY code ORDER BY number) AS PIVOT_CODE
FROM stackoverflow_198716
)
SELECT code,' + @select_list + '
FROM p
PIVOT (
MIN(number)
FOR PIVOT_CODE IN (
' + @pivot_list + '
)
) AS pvt
'
PRINT @sql
EXEC (@sql)
