Re: Information Schema and constraint names not unique

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От Alvaro Herrera
Тема Re: Information Schema and constraint names not unique
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Msg-id 20031106164956.GI2713@dcc.uchile.cl
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Ответ на Re: Information Schema and constraint names not unique  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Information Schema and constraint names not unique  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Thu, Nov 06, 2003 at 11:42:13AM -0500, Tom Lane wrote:
> Peter Eisentraut <peter_e@gmx.net> writes:
> > I don't think we really need a method to guarantee unique names.  It would
> > already help a lot if we just added the table name, or something that was
> > until a short time before the action believed to be the table name, or
> > even only the table OID, before (or after) the $1.
> 
> I don't have a problem with switching from "$1" to "tablename_$1", or
> some such, for auto-generated constraint names.  But if it's not
> guaranteed unique, does it really satisfy Philip's concern?

It certainly _is_ unique within a schema ...
(But what happens to the constraint name when the table is renamed?)

-- 
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"No renuncies a nada. No te aferres a nada."


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