----------------------------------------------------------------------------- -- (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: leave.db2 -- -- SAMPLE: To create the LEAVE_LOOP SQL procedure -- -- To create the SQL procedure: -- 1. Connect to the database -- 2. Enter the command "db2 -td@ -vf leave.db2" -- -- To call the SQL procedure from the command line: -- 1. Connect to the database -- 2. Enter the following command: -- db2 "CALL leave_loop (?)" -- -- You can also call this SQL procedure by compiling and running the -- C embedded SQL client application, "leave", using the leave.sqc -- source file available in the sqlpl samples directory. ---------------------------------------------------------------------------- -- -- For more information on the sample scripts, see the README file. -- -- For information on creating SQL procedures, see the Developing SQL and External Routines book. -- -- For information on using SQL statements, see the SQL Reference. -- -- For the latest information on programming, building, and running DB2 -- applications, visit the DB2 Information Center: -- http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp ----------------------------------------------------------------------------- CREATE PROCEDURE leave_loop(OUT counter INT) LANGUAGE SQL BEGIN DECLARE SQLSTATE CHAR(5); DECLARE v_firstnme VARCHAR(12); DECLARE v_midinit CHAR(1); DECLARE v_lastname VARCHAR(15); DECLARE v_counter SMALLINT DEFAULT 0; DECLARE at_end SMALLINT DEFAULT 0; DECLARE not_found CONDITION for SQLSTATE '02000'; DECLARE c1 CURSOR FOR SELECT firstnme, midinit, lastname FROM employee; DECLARE CONTINUE HANDLER for not_found SET at_end = 1; -- initialize OUT parameter SET counter = 0; OPEN c1; fetch_loop: LOOP FETCH c1 INTO v_firstnme, v_midinit, v_lastname; IF at_end <> 0 THEN LEAVE fetch_loop; END IF; -- Use a local variable for the iterator variable -- because SQL procedures only allow you to assign -- values to an OUT parameter SET v_counter = v_counter + 1; END LOOP fetch_loop; CLOSE c1; -- Now assign the value of the local -- variable to the OUT parameter SET counter = v_counter; END @