sqlserver2005-pivot和unpivot的用法

CREATE TABLE [dbo].[Table1]( [id] [nchar](10) COLLATE Chinese_PRC_CI_AS NULL, [c1] [nchar](10) COLLATE Chinese_PRC_CI_AS NULL, [c2] [nchar](10) COLLATE Chinese_PRC_CI_AS NULL, [c3] [nchar](10) COLLATE Chinese_PRC_CI_AS NULL ) ON [PRIMARY] CREATE TABLE [dbo].[Table2]( [id] [nchar](10) COLLATE Chinese_PRC_CI_AS NULL, [val] [nchar](10) COLLATE Chinese_PRC_CI_AS NULL ) ON [PRIMARY] select * from table1 1 aa bb cc 2 dd ee ff insert into table2(id,val) select id,val from ( select * from table1 )a UNPIVOT ( val for DataType in( c1,c2,c3) )as b; select * from table2 1 aa 1 bb 1 cc 2 dd 2 ee 2 ff