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From "George Baklarz (JIRA)" <derby-...@db.apache.org>
Subject [jira] Created: (DERBY-171) Need Correlation ID in UPDATE/DELETE statements
Date Thu, 10 Mar 2005 16:39:53 GMT
Need Correlation ID in UPDATE/DELETE statements
-----------------------------------------------

         Key: DERBY-171
         URL: http://issues.apache.org/jira/browse/DERBY-171
     Project: Derby
        Type: Improvement
  Components: SQL  
    Versions: 10.0.2.0    
 Environment: Windows XP SP1 Professional
    Reporter: George Baklarz


You currently can't use a correlation ID in an UPDATE/DELETE statement. This makes it cumbersome
to do the following:

UPDATE EMPLOYEE_BONUS
  SET BONUS = (SELECT SUM(BONUSES.BONUS) FROM BONUSES WHERE 
          EMPLOYEE_BONUS.EMPL_ID = BONUSES.EMPL_ID);

The use of a correlation ID makes this easier to code.

UPDATE EMPLOYEE E
  SET BONUS = (SELECT SUM(B.BONUS) FROM BONUSES B WHERE B.EMPL_ID = E.EMPL_ID);

This is particularly important if you get carried away with long SCHEMA and TABLE names!



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