How to substitute Purchase for 'P' and 'Manufacturing' for 'M' .

How to substitute Purchase for 'P' and 'Manufacturing' for 'M' .

How to substitute Purchase for 'P' and 'Manufacturing' for 'M' and default 'Administration' for ' '(blank) in SQL/400 SELECT statement.

A CASE statement can be used in a SELECT statement to achieve this. Here is an example: 

 SELECT EMPNO, LASTNAME, FIRSTNAME,
       CASE  EMP_DIV
        WHEN 'H' then 'Human_Resource'
        WHEN 'I' then 'Information_tech'
        WHEN 'P' then 'Purchase'
        WHEN 'M' then 'Manufacturing'  
           ELSE 'ADMINISTRATION' 
       END AS DIVISION
FROM EMPLOYEE;

EMP_DIV can be replaced with SUBSTR expression to include part of String in field EMP_DIV.


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This was first published in April 2001

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