Example: Updating and Deleting with Cursors
The following example illustrates updating and deleting with a cursor:
exec sql include sqlca;
exec sql begin declare section;
name character_string(15);
salary float;
exec sql end declare section;
exec sql whenever sqlerror stop;
exec sql connect personnel;
exec sql declare c1 cursor for
select ename, sal
from employee
for update of sal;
exec sql open c1;
exec sql whenever not found goto closec1;
loop while more rows
exec sql fetch c1 into :name, :salary;
print name, salary;
/* Increase salaries of all employees earning
less than 60,000. */
if salary < 60,000 then
print 'Updating ', name;
exec sql update employee
set sal = sal * 1.1
where current of c1;
/* Fire all employees earning more than
300,000. */
else if salary > 300,000 then
print 'Terminating ', name;
exec sql delete from employee
where current of c1;
end if;
end loop;
closec1:
exec sql close c1;
exec sql disconnect;