-----------------------------------------------------------------------------
-- (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.
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--
-- SOURCE FILE NAME: basecase.db2
--    
-- SAMPLE: To create the UPDATE_SALARY SQL procedure 
--
-- To create the SQL procedure:
-- 1. Connect to the database
-- 2. Enter the command "db2 -td@ -vf basecase.db2"
--
-- To call the SQL procedure from the command line:
-- 1. Connect to the database
-- 2. Enter the following command:
--    db2 "CALL update_salary ('000100', 1)"
--
-- You can also call this SQL procedure by compiling and running the
-- C embedded SQL client application, "basecase", using the basecase.sqc
-- source file available in the sqlpl samples directory.
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--
-- 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
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    CREATE PROCEDURE update_salary
    (IN employee_number CHAR(6), IN rating INT)
    LANGUAGE SQL
    BEGIN
      DECLARE SQLSTATE CHAR(5);
      DECLARE not_found CONDITION FOR SQLSTATE '02000';
      DECLARE EXIT HANDLER FOR not_found
        SIGNAL SQLSTATE '02444';

      CASE rating
        WHEN 1 THEN 
          UPDATE employee
          SET salary = salary * 1.10, bonus = 1000
          WHERE empno = employee_number;
        WHEN 2 THEN 
          UPDATE employee
          SET salary = salary * 1.05, bonus = 500
          WHERE empno = employee_number;
        ELSE
          UPDATE employee
          SET salary = salary * 1.03, bonus = 0
          WHERE empno = employee_number;
       END CASE;
    END @