اخي مصطفى لقد قمت بحل هذا السوال

 Create a PL/SQL block to retrieve the last name and department ID of each employee from the (EMP) table for those employees whose EMPID is less than 7500.
1- From the values retrieved calculate the annual commission of every employee and print it out using DBMS_OUTPUT.PUT_LINE.
2- Using a loop, retrieve the employee name information and the salary information from the PL/SQL tables and display it in the window, using DBMS_OUTPUT.PUT_LINE. Display these details for the first 15 employees in the PL/SQL tables


الحل :
select last_name,department_ID from emp where empid<7500
select Employee.Emp_ID,Emp_Name ,sum(commission) From Employee inner join Emp_commission On Employee.Emp_ID=Emp_commission.Emp_ID
Group By Employee.Emp_ID,Emp_Name
declare

cursor Emp is
select
Emp_Name,Sallery
from Employee where ROWNUM<=15;
begin
for r_Emp in Emp loop
dbms_output.put_line(r_Emp.Emp_Name||' '||
r_Emp.salary );
end loop;
end;

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