***********************************************************************
** (c) Copyright IBM Corp. 2007 All rights reserved.
**
** The following sample of source code ("Sample") is owned by International
** Business Machines Corporation or one of its subsidiaries ("IBM") and is
** copyrighted and licensed, not sold. You may use, copy, modify, and
** distribute the Sample in any form without payment to IBM, for the purpose of
** assisting you in the development of your applications.
**
** The Sample code is provided to you on an "AS IS" basis, without warranty of
** any kind. IBM HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR
** IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do
** not allow for the exclusion or limitation of implied warranties, so the above
** limitations or exclusions may not apply to you. IBM shall not be liable for
** any damages you suffer as a result of using, copying, modifying or
** distributing the Sample, even if IBM has been advised of the possibility of
** such damages.
***********************************************************************
**
** SOURCE FILE NAME: varinp.sqb
**
** SAMPLE: How to update table data using parameter markers
**
** This sample program demonstrates the use of a CURSOR.
** The CURSOR is processed using dynamic SQL. This program
** obtains all managers in the STAFF tables of the SAMPLE
** database and changes their job from "Mgr" to "Clerk"
** using parameter markers. A ROLLBACK is done so that the
** SAMPLE database remains unchanged.
**
** SQL STATEMENTS USED:
** BEGIN DECLARE SECTION
** END DECLARE SECTION
** ROLLBACK
** EXECUTE
** CONNECT
** PREPARE
** DECLARE
** CLOSE
** FETCH
** OPEN
**
**
***********************************************************************
**
** For more information on the sample programs, see the README file.
**
** For information on developing embedded SQL applications see the Developing Embedded SQL Applications book.
**
** For information on using SQL statements, see the SQL Reference.
**
** For the latest information on programming, compiling, and running
** DB2 applications, visit the DB2 Information Center:
** http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp
***********************************************************************
Identification Division.
Program-ID. "varinp".
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 st pic x(127).
01 parm-var pic x(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: VARINP".
* 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.
move "SELECT name, dept FROM staff
- " WHERE job = ? FOR UPDATE OF job" to st.
EXEC SQL PREPARE s1 FROM :st END-EXEC. 1
move "PREPARE" to errloc.
call "checkerr" using SQLCA errloc.
EXEC SQL DECLARE c1 CURSOR FOR s1 END-EXEC. 2
move "Mgr" to parm-var.
EXEC SQL OPEN c1 USING :parm-var END-EXEC 3
move "OPEN" to errloc.
call "checkerr" using SQLCA errloc.
move "Clerk" to parm-var.
move "UPDATE staff SET job = ? WHERE CURRENT OF c1" to st.
EXEC SQL PREPARE s2 from :st END-EXEC. 4
move "PREPARE S2" to errloc.
call "checkerr" using SQLCA errloc.
* call the FETCH and UPDATE loop.
perform Fetch-Loop thru End-Fetch-Loop
until SQLCODE not equal 0.
EXEC SQL CLOSE c1 END-EXEC. 7
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. 5
if SQLCODE not equal 0
go to End-Fetch-Loop.
display pname, " in dept. ", dept,
" will be demoted to Clerk".
EXEC SQL EXECUTE s2 USING :parm-var END-EXEC. 6
move "EXECUTE" to errloc.
call "checkerr" using SQLCA errloc.
End-Fetch-Loop. exit.
End-Prog.
stop run.