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Re: inserting new records without OIDs

From: Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>
To: Andreas Pflug <pgadmin(at)pse-consulting(dot)de>
Cc: mdoggett(at)coas(dot)oregonstate(dot)edu,"[pgADMIN]" <pgadmin-support(at)postgresql(dot)org>
Subject: Re: inserting new records without OIDs
Date: 2004-02-19 01:09:10
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgadmin-support
> Shhh, didn't think of that. So we won't ever accept unique indices for 
> this.

What we do in phpPgAdmin is that rows with NULL values in the unique key 
simply aren't editable - all other rows are though.

In order, we prefer to use a PK (since it is indexed), then oid column 
(since it is complete), then unique.  It's even better if they add a 
unique constraint to their oid column :)

>> Also, oids are not guaranteed unique.
> AFAICS this only happens on wrap around, i.e. hopefully never. Being 
> strict, we shouldn't rely on oid uniqueness, but in practice hopefully 
> nobody will ever notice.

What phpPgAdmin does for oid edits is it begins a transaction, does the 
update, checks to see how many rows were affected.  If more than one row 
affected, rollback and complain, otherwise commit.


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