*********************************************************************** ** (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: 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 ** ** *********************************************************************** ** ** 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. "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 1 SELECT name, dept FROM staff WHERE job='Mgr' FOR UPDATE OF job END-EXEC. EXEC SQL OPEN c1 END-EXEC 2 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. 5 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. 3 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' 4 WHERE CURRENT OF c1 END-EXEC. move "UPDATE" to errloc. call "checkerr" using SQLCA errloc. End-Fetch-Loop. exit. End-Prog. stop run.