How do you write a matching record in Cobol?
How do you write a matching record in Cobol?
ws-acct-match pic x. 1)SORT SORT-FILE1 ASCENDING SORT-KEY(empnumber) USING INPUT1-FILE GIVING INP1-FILE. 2)SORT SORT-FILE2 ASCENDING SORT-KEY(empnumber) USING INPUT1-FILE GIVING INP2-FILE. PERFORM 250-COMP-PARA UNTIL EOF-IE = ‘Y’ OR EOF-FILE1 = ‘Y’.
What is merge in Cobol?
The MERGE statement combines two or more identically sequenced files on a set of specified keys, and during the process makes records available, in merged order, to an output procedure or to an output file.
How do I find end of file in Cobol?
PROCEDURE DIVISION. OPEN INPUT STUDENT. PERFORM UNTIL WS-EOF=’Y’ READ STUDENT INTO WS-STUDENT AT END MOVE ‘Y’ TO WS-EOF NOT AT END DISPLAY WS-STUDENT END-READ END-PERFORM. CLOSE STUDENT.
How do you write a matched record in JCL?
JCL SORT to join two files and writes records from both files :
- Matched Records (Inner Join) –
- Matched Records and Non Matched Records from File1 –
- Non Matched from File1 –
- Matched Records and Non Matched from File2 –
- Non Matched from File2 –
- Matched Records and Non Matched Records from both files –
What is the merge operation in syntax?
Merge (usually capitalized) is one of the basic operations in the Minimalist Program, a leading approach to generative syntax, when two syntactic objects are combined to form a new syntactic unit (a set).
How do you sort files in Cobol?
Following is the syntax to sort a file: SORT work-file ON ASCENDING KEY rec-key1 [ON DESCENDING KEY rec-key2] USING input-file GIVING output-file. SORT performs the following operations: Opens work-file in the I-O mode, input-file in the INPUT mode and output-file in the OUTPUT mode.
How do you write matched and unmatched records in JCL?
Can we delete record from sequential file in COBOL?
If ACCESS IS SEQUENTIAL , the record to be deleted must first be read by the COBOL program. The DELETE statement removes the record that was just read. If the DELETE statement is not preceded by a successful READ , the record is not deleted, and the file status key is set to 92.
What is Joinkeys in sort?
JOINKEYS in sort utility is used to perform various join operation on matched and non-matched records can be executed based on matching fields or Keys. Joining can be performed in number of ways like inner join, full outer join, left outer join, right outer join and unpaired combinations.
What is MERGE operation?
The merge operation performs an upsert, which means that the operation updates a service data object if it exists, or creates a new service data object if it doesn’t exist. The upsert behavior of the operation applies to all levels of the service data object.
Can we use MERGE on same table?
MERGE is a deterministic statement. That is, you cannot update the same row of the target table multiple times in the same MERGE statement. You must have the INSERT and UPDATE object privileges on the target table and the SELECT object privilege on the source table.
What is sorting and merging?
Merge sort is a sorting technique based on divide and conquer technique. With worst-case time complexity being Ο(n log n), it is one of the most respected algorithms. Merge sort first divides the array into equal halves and then combines them in a sorted manner.
How to do a 2-file match/merge in COBOL?
There is tested sample code to accomplish a 2-file match/merge posted as a “Sticky” at the top of the COBOL part of the forum. Download this to your pc and then upload to your source library (use Right-Click, Save. . .). Change this for your records/keys and implement the logic you need beyond the match/merge. Thanks.
How to create a COBOL program using VSAM file?
Create a COBOL base program in your source library For the VSAM file use the following copies – VSAMFD, VSAMRC, VSAMSEL in the appropriate places of the COBOL program. Define the INPUTs (SELECT, FD, OPEN, READ, CLOSE) Define the OUTPUT (SELECT, FD, OPEN, WRITE, CLOSE)
What is merge and how do I use it?
The MERGE verb combines two or more identically sequenced files. To have it work, you must have already sorted them according to an identical set of ascending/descending keys.