| From: | Gregory Stark <stark(at)enterprisedb(dot)com> |
|---|---|
| To: | "Andrew Dunstan" <andrew(at)dunslane(dot)net> |
| Cc: | "Bruce Momjian" <momjian(at)postgresql(dot)org>, <pgsql-committers(at)postgresql(dot)org> |
| Subject: | Re: pgsql: Update: < * Allow adding enumerated values to an existing |
| Date: | 2008-04-25 18:52:22 |
| Message-ID: | 87iqy5ojh5.fsf@oxford.xeocode.com |
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| Lists: | pgsql-committers pgsql-hackers |
"Andrew Dunstan" <andrew(at)dunslane(dot)net> writes:
> Where did this come from? Adding values anywhere except on the end of the
> enumeration list will be fraught with danger, as will removing them. In
> essence, either operation would entail rewriting every table that used the
> type. Anything else carries a major risk of corruption. That seems like a
> pretty bad idea.
The TODO doesn't say anything about there not being restrictions. Only being
able to add to the end seems like a likely such restriction.
And removing entries is "only" an engineering problem where you have to go out
and check that there are no records referencing that entry.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
Ask me about EnterpriseDB's RemoteDBA services!
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