sql隨機插入數據--記錄

sql面試題中經常出現一張學生表，表字段有學生ID，學生課程，學生成績

今天要實測，so，需要有數據，now，隨機生成數據，，，

create table student
(
id varchar(50), --編號
class varchar(50),--課程
soure int --成績
)
go

declare @i int
set @i = 0

while @i<30
begin

--插入數據
declare @r int
 exec awf_RandInt 50,100,@r output
insert into student values(''+@i,'語文',@r)

--修改數據
exec awf_RandInt 0,30,@r output
update student set class = '數學' where id = @r+''

--修改數據
exec awf_RandInt 0,30,@r output
update student set class = '英語' where id = @r+''


set @i=@i+1
end
select * from student

 隨機整數實在園子里找得，貼出來

--生成隨機整數
create procedure awf_RandInt
   @min int,
   @max int,
   @result int output
as
begin
    set @result= cast((rand()*(@max-@min)+@min) as int)
    return @result
end