***********************************************************************
** Licensed Materials - Property of IBM
**
** Governed under the terms of the International
** License Agreement for Non-Warranted Sample Code.
**
** (C) COPYRIGHT International Business Machines Corp. 1995 - 2002
** All Rights Reserved.
**
** US Government Users Restricted Rights - Use, duplication or
** disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
***********************************************************************
**
** SOURCE FILE NAME: openftch.sqb
**
** SAMPLE: How to modify table data using cursor statically
**
** This sample program demonstrates the use of a CURSOR.
** The CURSOR is processed using static SQL. This program
** obtains all managers in the STAFF tables of the SAMPLE
** database and changes their job from "Mgr" to "Clerk"
** or DELETE the row dependant upon the "dept" value.
** A ROLLBACK is done so that the SAMPLE database remains
** unchanged.
**
** SQL STATEMENTS USED:
** BEGIN DECLARE SECTION
** END DECLARE SECTION
** ROLLBACK
** CONNECT
** DECLARE
** FETCH
** OPEN
** DELETE
** UPDATE
** CLOSE
**
** OUTPUT FILE: openftch.out (available in the online documentation)
***********************************************************************
**
** For more information on the sample programs, see the README file.
**
** For information on developing COBOL applications, see the
** Application Development Guide.
**
** For information on using SQL statements, see the SQL Reference.
**
** For the latest information on programming, compiling, and running
** DB2 applications, visit the DB2 application development website:
** http://www.software.ibm.com/data/db2/udb/ad
***********************************************************************
Identification Division.
Program-ID.
"openftch".
Data Division.
Working-Storage Section.
copy
"sqlca.cbl".
EXEC SQL BEGIN DECLARE
SECTION END-EXEC.
01 pname
pic x(
10).
01 dept
pic s9(
4)
comp-5.
01 userid
pic x(
8).
01 passwd.
49 passwd-length
pic s9(
4)
comp-5 value 0.
49 passwd-name
pic x(
18).
EXEC SQL END DECLARE
SECTION END-EXEC.
77 errloc
pic x(
80).
Procedure Division.
Main
Section.
display "Sample COBOL program: OPENFTCH".
* Get database connection information.
display "Enter your user id (default none): "
with no advancing.
accept userid.
if userid =
spaces
EXEC SQL CONNECT
TO sample
END-EXEC
else
display "Enter your password : " with no advancing
accept passwd-name.
* Passwords in a CONNECT statement must be entered in a VARCHAR format
* with the length of the input string.
inspect passwd-name tallying passwd-length
for characters
before initial " ".
EXEC SQL CONNECT
TO sample USER :userid
USING :passwd
END-EXEC.
move "CONNECT TO" to errloc.
call "checkerr" using SQLCA errloc.
EXEC SQL DECLARE c1 CURSOR
FOR
SELECT name, dept
FROM staff
WHERE job=
'Mgr'
FOR UPDATE
OF job
END-EXEC.
EXEC SQL OPEN c1
END-EXEC
move "OPEN" to errloc.
call "checkerr" using SQLCA errloc.
* call the FETCH and UPDATE/DELETE loop.
perform Fetch-Loop thru End-Fetch-Loop
until SQLCODE not equal 0.
EXEC SQL CLOSE c1
END-EXEC.
move "CLOSE" to errloc.
call "checkerr" using SQLCA errloc.
EXEC SQL ROLLBACK END-EXEC.
move "ROLLBACK" to errloc.
call "checkerr" using SQLCA errloc.
display "On second thought -- changes rolled back.".
EXEC SQL CONNECT
RESET END-EXEC.
move "CONNECT RESET" to errloc.
call "checkerr" using SQLCA errloc.
End-Main.
go to End-Prog.
Fetch-Loop
Section.
EXEC SQL FETCH c1
INTO :pname, :dept
END-EXEC.
if SQLCODE not equal 0
go to End-Fetch-Loop.
if dept
greater than 40
go to Update-Staff.
Delete-Staff.
display pname,
" in dept. ", dept,
" will be DELETED!".
EXEC SQL DELETE FROM staff
WHERE CURRENT
OF c1
END-EXEC.
move "DELETE" to errloc.
call "checkerr" using SQLCA errloc.
go to End-Fetch-Loop.
Update-Staff.
display pname,
" in dept. ", dept,
" will be demoted to Clerk".
EXEC SQL UPDATE staff
SET job =
'Clerk'
WHERE CURRENT
OF c1
END-EXEC.
move "UPDATE" to errloc.
call "checkerr" using SQLCA errloc.
End-Fetch-Loop.
exit.
End-Prog.
stop run.
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