Update employees table - sql

Question

Guys I have the following problem:
Increase salary 15% for employees whose salary is less than 50% of their manager's salary.
Write PL/SQL procedure using cursor, loop and update.
Procedure header
Create or replace procedure inc_salary is:
. Exception if their salary after increase is more than 50% of their manager's salary.
Actually, we can do it directly like this:
update emp e
set e.salary+=e.salary*0.15
where e.salary<(select e.mgr from emp e, group by e.mgr)
Here is a picture of this table:
But I don't understand how to use the procedure. If I declare it like this, create or replace procedure inc_salary, then what should be its parameters? We can use of course loop, like
declare
for r in (select * from emp e) loop
update emp e
set r.salary+=r.salary*0.15;
where r.salary<r.mgr
exception
if r.salary >r.mgr*1.15 then
dbms.output_putline(' it can't increase');
end loop;
end;
But how to combine it together?

Answer 1

Why would you need a PL/SQL procedure? A simple query would do this job!
UPDATE emp
SET salary = salary * 1.15
WHERE empno IN (
SELECT e.empno
FROM emp e
JOIN emp m ON e.mgr = m.empno
WHERE e.salary < m.salary * 0.5
)
That's it!
But, if at all you need to use a procedure, you have to decide for yourself what exactly you want to do with it.
Every procedure has a set of formal parameters, which can even be an empty set. It is you who decides what to pass to a procedure. Consult your manager or architect for these situations.

Answer 2

declare
prec number;
procedure inc_salary(prcin number)
is
cursor cl is * from employees;
msal number(8,2);
mid number(6);
begin
for r in cl loop
mid := nvl(r.manager_id, r.employee_id);
select salary into msal from employees where employee_id = mid;
if r.salary < (msal * 0.5) then
update employees set
salary = salary * prc
where employee_id = r.employee_id;
end if;
end loop;
end inc_salary;
begin
prec := 1.5;
inc_salary(prec);
end ;