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Posted to derby-dev@db.apache.org by "Uriah Eisenstein (JIRA)" <ji...@apache.org> on 2010/09/04 18:10:32 UTC

[jira] Created: (DERBY-4790) Implementation of generated columns is not described

Implementation of generated columns is not described
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                 Key: DERBY-4790
                 URL: https://issues.apache.org/jira/browse/DERBY-4790
             Project: Derby
          Issue Type: Improvement
          Components: Documentation
    Affects Versions: 10.6.1.0
         Environment: All
            Reporter: Uriah Eisenstein
            Priority: Minor


It is not specified in the documentation whether columns defined with "generated always as <expression>" are physically stored in the database and take space, or calculated on the fly when read from. I asked about this on the mailing list and found that the former is true.

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