11.sql

SQL语句动态产生列

drop table test
CREATE TABLE [Test] (

       [id] [int] IDENTITY (1, 1) NOT NULL ,

       [name] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,

       [subject] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,

       [Source] [numeric](18, 0) NULL 

) ON [PRIMARY]

GO

INSERT INTO [test] ([name],[subject],[Source]) values (N'张三',N'yw',60)

INSERT INTO [test] ([name],[subject],[Source]) values (N'李四',N'sx',70)

INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'yy',80)

INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'sx',75)

INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'yw',57)

INSERT INTO [test] ([name],[subject],[Source]) values (N'李四',N'yw',80)

INSERT INTO [test] ([name],[subject],[Source]) values (N'张三',N'yy',100)

Go

declare @sql varchar(8000)

set @sql = 'select name,'

 

select @sql = @sql + 'sum(case subject when '''+subject+''' 

                          then source else 0 end) as '''+subject+''',' from (select distinct subject from test) as a

 

select @sql = left(@sql,len(@sql)-1) + ' from test group by name order by name'

exec(@sql)

go