How do I achieve procedure overloading say
p1 (a,b)
and p1(a,b,c)
do i need to create a package for this or not??
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suresh1977,
No comment has been added lately (288 days), so it's time to clean up this TA.
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RECOMMENDATION: Award points to viswapsp http:#7518102
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Thanks,
graham_charles
EE Cleanup Volunteer
Hi Charles
I need to write a procedure/s to search for a particular record based on any
of 3 search criteria
Should I write one procedure (overload it) to accept:
- a single IN parameter of type varchar2 (Search criteria 1)
- a SET of IN parameters that will accept 5 varchar2 and 1 Date values (Search criteria 2
- a SET of IN parameters that will accept 6 varchar2 values (Search criteria 3)
There are common values that will be passed in the second and third search criteria.
My query is
- Should there be a fixed format in which the procedure receives the IN parameters
- Since there are common values, how would the procedure differentiate between
the first and second set
- Or is this situation not a good one for procedure overload and I need to write
3 different procedures to handle this
Thanks in advance
Positive Imager
Business Accounts
Answer for Membership
by: viswapspPosted on 2002-12-01 at 16:11:44ID: 7518102
Hi Suresh,
One of the advantage of having packages is to have overloading which is not possible from standalone stored procedures. I have given one example here for your reference, which I hope will help you. I use the standard table EMP which has EMPNO, ENAME, JOB, MGR, DEPTNO as the columns.
1. Compile the below mentioned code package first and then package body.
2. Usage: you can use from SQL> prompt as
a. SELECT pkg_employee.gettotalsalar
b. You can use in PL/SQL Programming by assigning to a different variable.
x := pkg_employee.gettotalsalar
CREATE OR REPLACE PACKAGE pkg_Employee AS
FUNCTION getTotalSalary(i_Deptno IN NUMBER)
RETURN NUMBER;
FUNCTION getTotalSalary(i_JobCode IN VARCHAR2)
RETURN NUMBER;
END;
/
CREATE OR REPLACE PACKAGE BODY pkg_Employee AS
FUNCTION getTotalSalary(i_Deptno IN NUMBER)
RETURN NUMBER IS
l_TotalSalary NUMBER;
BEGIN
SELECT NVL(SUM(SAL), 0)
INTO l_TotalSalary
FROM EMP
WHERE DEPTNO = i_Deptno;
RETURN (l_TotalSalary);
END;
FUNCTION getTotalSalary(i_JobCode IN VARCHAR2)
RETURN NUMBER IS
l_TotalSalary NUMBER;
BEGIN
SELECT NVL(SUM(SAL), 0)
INTO l_TotalSalary
FROM EMP
WHERE JOB = i_JobCode;
RETURN (l_TotalSalary);
END;
END;
/
Any questions let me know.
Thanks