Help needed in writing a procedure

Question

Guys, i need some more help.
I am selecting one value using select by passing a parameter to that select statement which are stored in a file using utl_file package.
Now, I want to use the output of that query and use that value to update a column in the same table.
for ex:-
select comm from emp where empno = &empno1;
I want to use the comm value and update the comm value.
update emp
set comm = comm + 10
where empno = &empno1
Help Appreciated
Thanks

Answer 1

SQL> desc emp
Name Null? Type
EMPLOYEE_ID NOT NULL NUMBER(6)
FIRST_NAME VARCHAR2(20)
LAST_NAME NOT NULL VARCHAR2(25)
EMAIL NOT NULL VARCHAR2(25)
PHONE_NUMBER VARCHAR2(20)
HIRE_DATE NOT NULL DATE
JOB_ID NOT NULL VARCHAR2(10)
SALARY NUMBER(8,2)
COMMISSION_PCT NUMBER(2,2)
MANAGER_ID NUMBER(6)
DEPARTMENT_ID NUMBER(4)
NET_SALARY NUMBER(12,2)
SQL> select salary,COMMISSION_PCT,net_salary from emp where employee_id = 198;
SALARY COMMISSION_PCT NET_SALARY
2600 .1
SQL> update emp
2 set net_salary = salary + (select COMMISSION_PCT from emp where employee_id = &&empno)*salary
3 where employee_id = &&empno
4 /
Enter value for empno: 198
old 2: set net_salary = salary + (select COMMISSION_PCT from emp where employee_id = &&empno)*salary
new 2: set net_salary = salary + (select COMMISSION_PCT from emp where employee_id = 198)*salary
old 3: where employee_id = &&empno
new 3: where employee_id = 198
1 row updated.
SQL> select salary,COMMISSION_PCT,net_salary from emp where employee_id = 198;
SALARY COMMISSION_PCT NET_SALARY
2600 .1 2860
Hope this helps;