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https://issues.apache.org/jira/browse/DERBY-3922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-3922:
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Derby Info: [Patch Available]
> Enable the adding of generated columns via ALTER TABLE
> ------------------------------------------------------
>
> Key: DERBY-3922
> URL: https://issues.apache.org/jira/browse/DERBY-3922
> Project: Derby
> Issue Type: Task
> Components: SQL
> Affects Versions: 10.5.0.0
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Attachments: derby-3922-01-aa-repopulate.diff
>
>
> The initial grammar patch for generated columns did not include ALTER TABLE
> support. This support cannot be added until we check in the UPDATE logic for
> generated columns. Adding a generated column to an existing table is supposed
> to calculate the generated column's values for all rows currently in the
> table.
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