Re: Duplicate data even with primary keys enabled

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Hi all.
I faced the same issue last week. 
We had duplicated records on primary key. 
Postgresql version is 14.4


Sent from my iPhone

> On 29 Oct 2022, at 4:18 AM, Erik Wienhold <ewie@xxxxxxxxx> wrote:
> 
> 
>> 
>> On 28/10/2022 22:50 CEST Scott Ribe <scott_ribe@xxxxxxxxxxxxxxxx> wrote:
>> 
>> A corrupted index could allow that to happen by failing to catch the duplicate
>> insert. I suppose it might also be able to cause the same row to be returned
>> multiple times--although I have personally only ever seen corrupted indexes
>> cause rows to not be found.
> 
> I think it should be possible to tell those two cases apart by looking at system
> column ctid.  The ctid should be the same for duplicate rows if the same row is
> found multiple times in the index.  Different ctid if the corrupted index
> allowed INSERT with duplicates.
> 
> --
> Erik
> 
> 







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