跟着阿笨一起玩NET

摘要： declare @tab table(Class varchar(20),Student varchar(20),Course varchar(50),Grades decimal(7,2));insert into @tab(Class,Student,Course,Grades) values('A班','张三','语文',60);insert into @tab(Class,Student,Course,Grades) values('A班','张三','数学',70);insert into 阅读全文