- 1、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。。
- 2、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 4、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 5、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 6、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 7、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
sql行列转换方法整理(SQL ranks conversion method of finishing)
sql行列转换方法整理(SQL ranks conversion method of finishing) 1.-- ranks conversion Table name of subjects Zhang San Chinese 80 Zhang San mathematics 90 Three physics 85 Li Si Chinese 85 Lee four physics 82 Li Si English 90 Li four political 70 Wang Wu English 90 After conversion table: name of mathematical physics English Chinese politics Li four 082908570 Wang five 009000 Zhang SanExample: Create table CJ: create table CJ ( ID Int IDENTITY (1,1) not null, and ID -- to create columns, each new record will add 1 Name Varchar (50), Subject Varchar (50), Result Int, Primary key (ID) - ID was defined as the primary key of the CJ table ); --Truncate table CJ --Select * from CJ Insert into CJ Select three, Chinese, 80 union all Select three, mathematical, 90 union all Select three, physical, 85 union all Select Li four, Chinese, 85 union all Select Li four, physical, 82 union all Select Lee four, English, 90 union all Select Lee four, politics, 70 union all Select five King, English, 90 The ranks of the conversion -- Declare @sql varchar (8000) Set @sql =Select Name as name Select @sql = @sql + sum (case , Subject when+Subject+ then Result else 0 end [+Subject+]) From (select distinct Subject from CJ as CJ) - the names of all the subjects are listed only Select @sql = @sql+from CJ group by name Exec (@sql) 2. - with the ranks of the conversion The original table: class number 11 12 13 21 22 31 After conversion table: class number 1 1,2,3 2 1,2 31 Example: Create table ClassNo: create table ClassNo ( ID Int IDENTITY (1,1) not null, and ID -- to create columns, each new record will add 1 Class Varchar (50), - class list Number Varchar (50), - ID column Primary Key (ID) - ID was defined as the primary key of the ClassNo table ); --Truncate Table ClassNo --Select * from ClassNo Insert Into ClassNo Select 1,1 Union all Select 1,2 Union all Select 1,3 Union all Select 2,1 Union all Select 2,2 Union all Select 3,1 Create a merge function --Drop Function KFReturn Create Functi
您可能关注的文档
- flex debug error(Flex调试错误).doc
- flex优缺点分析(Flex advantages and disadvantages analysis).doc
- for_to_of_from_的区别(The difference between for_to_of_from_).doc
- fortigate上面检查网络连通性的三个步骤(FortiGate three steps to check network connectivity above).doc
- fpga的介绍(The introduction of FPGA).doc
- fraewell address 布什2009告别演说(中英双语对照演讲稿)(Fraewell address Bush 2009 farewell speech (Chinese and English bilingual speeches)).doc
- fdf-x标准(Fdf-x standard).doc
- ftp大学地址(FTP University.).doc
- ftir分析方法(FTIR analysis method).doc
- fun english(趣味英语).doc
- sql语句学习(SQL statement learning).doc
- table-switch(表开关).doc
- sql练习及答案(SQL exercises and answers).doc
- toefl作文考试百个精选替换词(TOEFL writing test hundreds of selected words).doc
- tmpgenc --小日本的使用详释(TMPGEnc - a small Japanese use difference).doc
- tcl与流通领域道不同却共相为谋(TCL and circulation but for different universals).doc
- tomcat 连接池时错误集(Set error Tomcat connection pool).doc
- tomcat下jndi数据库连接池的配置和测试(JNDI Tomcat database connection pool configuration and testing).doc
- server config(服务器配置).doc
- t九年级(下)第六单元试卷分析与总结(T grade nine (below) and summarize the sixth unit test paper analysis).doc
文档评论(0)