*********************************************************************** ** 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: 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 ** ** OUTPUT FILE: varinp.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 ***********************************************************************
ProcedureDivision.
Main Section. display"Sample COBOL program: VARINP".
* Get database connection information. display"Enter your user id (default none): " withnoadvancing. accept userid.
if userid = spaces EXECSQL CONNECT TO sample END-EXEC else display"Enter your password : "withnoadvancing 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 beforeinitial" ".
EXECSQL 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. EXECSQL PREPARE s1 FROM :st END-EXEC. move"PREPARE"to errloc. call"checkerr"using SQLCA errloc.
EXECSQL DECLARE c1 CURSOR FOR s1 END-EXEC.
move"Mgr"to parm-var.
EXECSQLOPEN c1 USING :parm-var END-EXEC 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.
Fetch-Loop Section. EXECSQL FETCH c1 INTO :pname, :dept END-EXEC. if SQLCODE notequal 0 goto End-Fetch-Loop. display pname, " in dept. ", dept, " will be demoted to Clerk".
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Die Informationen auf dieser Webseite wurden
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noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.