Read-only embedded ResultSets incur performance penalty due to updateable 
ResultSet code.
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         Key: DERBY-818
         URL: http://issues.apache.org/jira/browse/DERBY-818
     Project: Derby
        Type: Improvement
  Components: JDBC, Performance  
    Reporter: Daniel John Debrunner
 Assigned to: Daniel John Debrunner 
    Priority: Minor


The fields columnGotUpdated and copyOfDatabaseRow are allocated and maintained 
in EmbedResultSet for every ResultSet but they are only required if the result 
set is updateable. I saw a 5% improvement in execution rate on a simple VALUES 
clause when fixing this.

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