SQL & PL/SQL :: Updating Table For Different Number Of Fields Via Single Stored Procedure?

I've a table with fields:

create table test
( f1 varchar2(10),
f2 varchar2(10),
f3 varchar3(10)
)
insert into test values ('d1','d2','d3');
insert into test values ('d10','d20','d30');

I want to update the fields of the table as per need i.e update only one field leaving all the data of the fields as it is. Suppose I want to update only f1 (from d1 to x1) field leaving f2, and f3 as it is. I've written stored procedure to update all the fields but do not know how to do it?

Quote:CREATE OR REPLACE PROCEDURE UPDATE_TEST
( U_F1 TEST.F1%TYPE,
U_F2 TEST.F2%TYPE,

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