我需要转动一列(Numbers列).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...
使用ROW_NUMBER()
,PIVOT
以及一些动态SQL(但没有必要光标):
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 + ', ', '') + '[' + CONVERT(varchar, 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, number, 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)