Question

i have a table like:

create table police(
ssn
name
boss_name
salary
);

Insert into police values(1,’A’,’C’,10000);
Insert into police values(2,’B’,’D’,20000);
Insert into police values(3,’C’,’E’,30000);
Insert into police values(4,’D’,’E’,45000);
Insert into police values(5,’E’,NULL,55000);

I want a cursor that returns the total salary for the polices who have same boss. Here result will be:
30000(salary of C)+45000(salary of D)
as they both are under boss E. How I do it? How I find C and D as they are under E in ORACLE pl/sql or anonymous block?

Answer 1

Try this code:

set serveroutput on;
declare
 cboss_name varchar2(30) ;
 csalary number ;  
 CURSOR cur
 is       
  select boss_name,sum(salary)  as salary
  from police 
  where boss_name is not null 
  group by boss_name;
begin
   open cur;
   fetch cur into cboss_name,csalary;
    dbms_output.put_line('boss_name'||' '||'csalary');
    LOOP
    FETCH cur INTO cboss_name,csalary;
       EXIT WHEN cur%NOTFOUND;
       dbms_output.put_line(cboss_name||'         '||csalary);
   END LOOP;

   close cur;  
end;

Here you can find more information about cursors and loops.