PROGRAM TO DEMONSTRATE MERGE VERB:
The two files for which a record having 2 fields viz. Account Number and Name are already available. Now Merge these two files and create a new file based on the ascending order of the Account Number.
identification division.
program- id.
environment division.
input-output section.
file-control.
select o1- file assign to disk
organization is line sequential.
select o2- file assign to disk
organization is line sequential.
select s1-file assign to disk
organization is line sequential.
select s2-file assign to disk
organization is line sequential.
select m- file assign to disk
organization is line sequential.
select w- file assign to disk.
data division.
file section.
fd o1- file
label records are standard
value of file- id is "o1.dat".
01 o1-rec.
02 o1-acc-no pic 9(2).
02 o1-name pic x(4).
fd o2- file
label records are standard
value of file- id is "o2.dat".
01 o2-rec.
02 o2-acc-no pic 9(2).
02 o2-name pic x(4).
fd s1-file
label records are standard
value of file- id is "s1.dat".
01 s1-rec.
02 s1-acc-no pic 9(2).
02 s1-name pic x(4).
fd s2-file
label records are standard
value of file- id is "s2.dat".
01 s2-rec.
02 s2-acc-no pic 9(2).
02 s2-name pic x(4).
fd m- file
label records are standard
value of file- id is "m.dat".
01 m-rec.
02 m-acc-no pic 9(2).
02 m-name pic x(4).
sd w-file.
01 w-rec.
02 w-acc-no pic 9(2).
02 w-name pic x(4).
procedure division.
p-1.
sort w-file on ascending key w-acc-no using o1-file giving s1- file.
sort w-file on ascending key w-acc-no using o2-file giving s2- file.
merge w-file on ascending key w-acc-no using s1-file s2-file giving m- file.
stop run.