sql 交叉表

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]GOINSERT INTO [test] ([name],[subject],[Source]) values (N'张三',N'语文',60)INSERT INTO [test] ([name],[subject],[Source]) values (N'李四',N'数学',70)INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'英语',80)INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'数学',75)INSERT INTO [test] ([name],[subject],[Source]) values (N'王五',N'语文',57)INSERT INTO [test] ([name],[subject],[Source]) values (N'李四',N'语文',80)INSERT INTO [test] ([name],[subject],[Source]) values (N'张三',N'英语',100)Go--用于：交*表的列数是确定的select name,sum(case subject when '数学' then source else 0 end) as '数学',sum(case subject when '英语' then source else 0 end) as '英语',sum(case subject when '语文' then source else 0 end) as '语文' from test group by name--用于：交*表的列数是不确定的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 aselect @sql = left(@sql,len(@sql)-1) + ' from test group by name'exec(@sql)go