急求答案！数据库T-SQL编程问题！
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解决时间 2021-04-06 11:41
- 提问者网友：富士山上尢
- 2021-04-06 08:01
急求答案！数据库T-SQL编程问题！
最佳答案
- 五星知识达人网友：煞尾
- 2021-04-06 08:09
while exists(select 0 where StudentCourse group by StudentID having avg(Grade)<85)
begin
update StudentCourse set Grade=case when Grade>=90 then Grade when Grade>=80 and Grade<90 then Grade+1 when Grade>=70 and Grade<80 then Grade+2 when Grade>=60 and Grade<70 then Grade+3 else Grade+5 end
end
begin
update StudentCourse set Grade=case when Grade>=90 then Grade when Grade>=80 and Grade<90 then Grade+1 when Grade>=70 and Grade<80 then Grade+2 when Grade>=60 and Grade<70 then Grade+3 else Grade+5 end
end
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