1.如果雇员工资低于2000,则给雇员增加10%的工资。(scott用户中的emp表)
declare
cursor emp_cursor is select ename,sal from emp for update;
emp_record emp_cursor%rowtype;
begin
open emp_cursor;
loop
fetch emp_cursor into emp_record;
exit when emp_cursor%notfound;
if emp_record.sal<2000 then
update emp set sal=sal*1.1 where current of emp_cursor;
end if;
end loop;
end;