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)
原文地址:https://www.jb51.cc/mssql/77423.html
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