How to Create a procedure

Question

I would like to convert the below query to procedure that takes to parameter.Instead of hardcoding the value for the date, i would like to pass it as a parameter from my asp.net application.Can someone take a look at it and help me altering this sql scrip to procedure that takes two date vlues.
AND (P.DATEPUR >= TO_DATE('2002-01-01','YYYY-MM-DD')
AND P.DATEPUR <= TO_DATE('2005-12-31','YYYY-MM-DD'))
SELECT DISTINCT V.VENDOR, R.ADDRNUM, V.VNAMEL, R.AADDR1, R.ACITY, R.ASTATE,
R.AZIPCODE, R.APHONE, MAX(P.DATEPUR)
FROM VENDOR V,VENDADDR R,PLANHOLD P
WHERE V.VENDOR = R.VENDOR
AND P.VENDOR = R.VENDOR
AND (P.DATEPUR >= TO_DATE('2002-01-01','YYYY-MM-DD')
AND P.DATEPUR <= TO_DATE('2005-12-31','YYYY-MM-DD'))
AND V.VOBSOLET = 'N'
GROUP BY V.VENDOR, R.ADDRNUM, V.VNAMEL, R.AADDR1, R.ACITY, R.ASTATE,R.AZIPCODE, R.APHONE
ORDER BY V.VENDOR;

Answer 1

here is an example:
CREATE OR REPLACE PROCEDURE myProcedure(pFromDate Date,
                                        pToDate   Date) Is
CURSOR c1 IS
   SELECT DISTINCT V.VENDOR, R.ADDRNUM, V.VNAMEL, R.AADDR1, R.ACITY, R.ASTATE,
                   R.AZIPCODE, R.APHONE, MAX(P.DATEPUR)
   FROM VENDOR V,VENDADDR R,PLANHOLD P
   WHERE V.VENDOR = R.VENDOR
   AND P.VENDOR = R.VENDOR
   AND (P.DATEPUR >= TO_DATE(pFromDate,'YYYY-MM-DD')
   AND  P.DATEPUR <= TO_DATE(pToDate,  'YYYY-MM-DD'))
   AND V.VOBSOLET = 'N'
   GROUP BY V.VENDOR, R.ADDRNUM, V.VNAMEL, R.AADDR1, R.ACITY, R.ASTATE,R.AZIPCODE, R.APHONE
   ORDER BY V.VENDOR;
BEGIN
  FOR c1_rec in c1 LOOP
  END;
END;
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