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drop table ABC;    create table ABC(id number,name varchar2(50),kcName varchar2(50),score number); 
insert into ABC values(1,"张三","语文",88); 
insert into ABC values(2,"张三","数学",68); 
insert into ABC values(3,"张三","英语",78); 
 
insert into ABC values(4,"李四","英语",78); 
insert into ABC values(5,"李四","语文",88); 
insert into ABC values(6,"李四","数学",79); 
 
insert into ABC values(7,"王五","英语",74); 
insert into ABC values(8,"王五","语文",58); 
insert into ABC values(9,"王五","数学",98); 
 
select * from abc; 
select abc.Name,sum(decode(kcName,"语文",SCORE,null)) 语文, 
                sum(decode(kcName,"数学",SCORE,null)) 数学, 
                sum(decode(kcName,"英语",SCORE,null)) 英语 
                from abc group by abc.name; 
 
结果:                 
NAME    语文  数学  英语 
1   王五  158 198 174 
2   李四  188 179 178 
3   张三  188 168 178Oracle数据库cpu100%处理Oracle 数据库定时执行一些脚本相关资讯      Oracle教程 
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