交叉表例項

建表：

在查詢分析器裡執行：

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'張三',n'語文',60)

insert into [test] ([name],[subject],[source]) values (n'李四',n'數學',70)

insert into [test] ([name],[subject],[source]) values (n'王五',n'英語',80)

insert into [test] ([name],[subject],[source]) values (n'王五',n'數學',75)

insert into [test] ([name],[subject],[source]) values (n'王五',n'語文',57)

insert into [test] ([name],[subject],[source]) values (n'李四',n'語文',80) [bitscn.com] 

insert into [test] ([name],[subject],[source]) values (n'張三',n'英語',100)

go　　

交叉表語句的實現：

用於：交叉表的列數是確定的

select name,sum(case subject when '數學' then source else 0 end) as '數學',

sum(case subject when '英語' then source else 0 end) as '英語',

sum(case subject when '語文' then source else 0 end) as '語文'

from test

group by name

--用於：交叉表的列數是不確定的

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 a

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

exec(@sql)

go

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資料庫基於sql server 2000。交叉表例項 建表 在查詢分析器裡執行 create table test id int identity 1,1 not null name nvarchar 50 collate chinese prc ci as null subject nvarcha...