How do I use bin variable in package without asking a user?

Question

hi,
I would like to write an SQL but I want to use bind variable in package as a static without asking user? Like below?
I would like to ask you, below there is a emp_id variable? Is this BIND variable?
DECLARE
bonus NUMBER(8,2);
emp_id NUMBER(6) := 100;
BEGIN
SELECT salary * 0.10 INTO bonus FROM employees
WHERE employee_id = emp_id;
END;
If not, like this SQL how can define a BIND variable as static inside a code? not asking a user?
db version. 9.2.0.8
regards and thanks

Answer 1

OracleADay wrote:
I would like to ask you, below there is a emp_id variable? Is this BIND variable?
DECLARE
bonus NUMBER(8,2);
emp_id NUMBER(6) := 100;
BEGIN
SELECT salary * 0.10 INTO bonus FROM employees
WHERE employee_id = emp_id;
END;
/In the query "SELECT salary * 0.10 INTO bonus FROM employees WHERE employee_id = emp_id" emp_id is turned into a bind variable because
if you are coding static SQL in PL/SQL then PL/SQL wil automatically use bind variables: please read http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14261/overview.htm#sthref145.
This can also be proved with SQL trace. The following code:
alter session set sql_trace=true;
declare
v number;
c number;
begin
select count(*) into c
from t
where x=v;
end;
show errors
alter session set sql_trace=false;generates following raw trace file section with 10G XE:
=====================
PARSING IN CURSOR #2 len=79 dep=0 uid=69 oct=47 lid=69 tim=33338762257 hv=2860574766 ad='3c10120c'
declare
v number;
c number;
begin
select count(*) into c
from t
where x=v;
end;
END OF STMT
PARSE #2:c=46800,e=329811,p=0,cr=9,cu=0,mis=1,r=0,dep=0,og=1,tim=33338762253
=====================
PARSING IN CURSOR #1 len=35 dep=1 uid=69 oct=3 lid=69 tim=33338788761 hv=3539261652 ad='3c10053c'
SELECT COUNT(*) FROM T WHERE X=:B1
END OF STMT
PARSE #1:c=0,e=216,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=1,tim=33338788755
=====================Edited by: P. Forstmann on 17 mai 2011 17:47
Edited by: P. Forstmann on 17 mai 2011 17:55