create or replace function
f_getavgsal(no number,sumsal out number)
return number
as
avgsal number(7,2);
begin
--平均工资
select avg(sal) into avgsal
from emp where deptno = no;
--工资总额
select sum(sal) into sumsal
from emp where deptno = no;
--返回值
return avgsal;
end;
这个函数怎么调用的
