數據庫基於SQL SERVER 2000。
交叉表實例 建表: 在查詢分析器裏運行: 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] GO INSERT 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) 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 運行結果:
插入數據的另一種寫法: Insert Class |
詳細介紹SQL交叉表的實例
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