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Datei:
P13.cob
Sprache: Unknown
***********************************************************************
** 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: updat.sqb
**
** SAMPLE: How to update, delete and insert table data
**
** This sample program demonstrates the use of static SQL.
** It will obtain all managers in the STAFF table of the
** SAMPLE database and change their job from 'Mgr' to
** 'Clerk', deletes all who are 'Sales', and inserts a new
** row. In all three SQL statements (UPDATE, DELETE,
** INSERT) a host variable is implemented. A ROLLBACK will
** be done so that the SAMPLE database remains unchange.
**
** SQL STATEMENTS USED:
** BEGIN DECLARE SECTION
** END DECLARE SECTION
** ROLLBACK
** CONNECT
** UPDATE
** DELETE
** INSERT
**
** OUTPUT FILE: updat.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. "updat".
Data Division.
Working-Storage Section.
copy "sql.cbl".
copy "sqlenv.cbl".
copy "sqlca.cbl".
EXEC SQL BEGIN DECLARE SECTION END-EXEC.
01 statement pic x(80).
01 userid pic x(8).
01 passwd.
49 passwd-length pic s9(4) comp-5 value 0.
49 passwd-name pic x(18).
01 job-update pic x(5).
EXEC SQL END DECLARE SECTION END-EXEC.
* Local variables
77 errloc pic x(80).
77 error-rc pic s9(9) comp-5.
77 state-rc pic s9(9) comp-5.
* Variables for the GET ERROR MESSAGE API
* Use application specific bound instead of BUFFER-SZ
77 buffer-size pic s9(4) comp-5 value 1024.
77 line-width pic s9(4) comp-5 value 80.
77 error-buffer pic x(1024).
77 state-buffer pic x(1024).
Procedure Division.
Main Section.
display "Sample COBOL program: UPDAT".
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 "Clerk" to job-update.
EXEC SQL UPDATE staff SET job=:job-update
WHERE job='Mgr' END-EXEC.
move "UPDATE STAFF" to errloc.
call "checkerr" using SQLCA errloc.
display "All 'Mgr' have been demoted to 'Clerk'!".
move "Sales" to job-update.
EXEC SQL DELETE FROM staff WHERE job=:job-update END-EXEC.
move "DELETE FROM STAFF" to errloc.
call "checkerr" using SQLCA errloc.
display "All 'Sales' people have been deleted!".
EXEC SQL INSERT INTO staff VALUES (999, 'Testing', 99,
:job-update, 0, 0, 0) END-EXEC.
move "INSERT INTO STAFF" to errloc.
call "checkerr" using SQLCA errloc.
display "New data has been inserted".
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-Prog.
stop run.
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