计算成绩及格数,如果及格数为0,如何显示学号并显示及格数为0
select nvl(count(*),0),scoreicode from scorect where score>=60 group by scoreicode
当score<60时,显示学号并显示及格数为0,请问有什么办法实现该功能
select sum(decode(sign(score,60),-1,0,1)),
scoreicode
from scorect
group by scoreicode