Compaq COBOL AAQ2G1FTK - Manual (Page 290)

Using the SORT and MERGE Statements
9.3 Sample Programs Using the SORT and MERGE Statements
Example 9–8 Using the USING and OUTPUT PROCEDURE Phrases
IDENTIFICATION DIVISION.
PROGRAM-ID. SORTB.
**************************************************************
*
This program shows how to sort a file *
* with the USING and OUTPUT PROCEDURE phrases *
* of the SORT statement. The program eliminates *
* duplicate records by adding their amounts to the *
* amount in the first record with the same account *
* number. Only records with unique account numbers *
* are written to the output file. The fields to be *
* sorted are S-KEY-1 and S-KEY-2; they contain account *
* numbers and amounts. The sort sequence is amount *
* within account number. *
* Notice that the organization of OUTPUT-FILE is indexed. *
**************************************************************
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT INPUT-FILE ASSIGN TO "INPFIL".
SELECT OUTPUT-FILE ASSIGN TO "OUTFIL"
ORGANIZATION IS INDEXED.
SELECT SORT-FILE ASSIGN TO "SRTFIL".
DATA DIVISION.
FILE SECTION.
SD
SORT-FILE.
01 SORT-REC.
03
S-KEY-1.
05
S-ACCOUNT-NUM PIC X(8).
03 FILLER PIC X(32).
03 S-KEY-2.
05
S-AMOUNT PIC S9(5)V99.
03 FILLER PIC X(53).
FD INPUT-FILE
LABEL RECORDS ARE STANDARD.
01 IN-REC PIC X(100).
FD OUTPUT-FILE
LABEL RECORDS ARE STANDARD
ACCESS MODE IS SEQUENTIAL
RECORD KEY IS OUT-KEY.
01 OUT-REC.
03
OUT-KEY PIC X(8).
03 FILLER PIC X(92).
WORKING-STORAGE SECTION.
01
INITIAL-SORT-READ PIC X VALUE "Y".
01 SAVE-SORT-REC.
03
SR-ACCOUNT-NUM PIC X(8).
03 FILLER PIC X(32).
03 SR-AMOUNT PIC S9(5)V99.
03 FILLER PIC X(53).
PROCEDURE DIVISION.
000-START SECTION.
005-DO-THE-SORT.
SORT SORT-FILE ON ASCENDING KEY
S-KEY-1
S-KEY-2
(continued on next page)
9–12 Using the SORT and MERGE Statements