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From: mark bradley <[email protected]>
To: Adrian Klaver <[email protected]>
To: Ron Johnson <[email protected]>
To: pgsql-general <[email protected]>
Subject: Re: Duplicate Key Values
Date: Thu, 6 Mar 2025 18:11:15 +0000
Message-ID: <SJ2PR22MB4328C53DB4397EB9759419DDBACA2@SJ2PR22MB4328.namprd22.prod.outlook.com> (raw)
In-Reply-To: <[email protected]>
References: <CH3PR22MB4312C23476C0E67F9B4C2E10BACB2@CH3PR22MB4312.namprd22.prod.outlook.com>
	<CANzqJaDWzZ4O10QZi6w__N5q7gzwcZANfu0DxA7UOpFwqAqTyQ@mail.gmail.com>
	<SJ2PR22MB43284AE4E32208EB035F68F5BACB2@SJ2PR22MB4328.namprd22.prod.outlook.com>
	<CANzqJaCZefaoZqJzPSFqEaRA1W-Ps5E6yNuL_PT-WxUw9x38Nw@mail.gmail.com>
	<[email protected]>

Here is the table definition:

[cid:ecac8e92-826b-45c8-95a8-aaf0e55c4f9c]

And here is the error message I get when I try to delete a duplicate:

[cid:a0f5f298-984d-4f89-abd2-475c02e65b9d]

Mark Brady,
amazon.com/author/markjbrady<https://amazon.com/author/markjbrady;
________________________________
From: Adrian Klaver <[email protected]>
Sent: Wednesday, March 5, 2025 6:49 PM
To: Ron Johnson <[email protected]>; pgsql-general <[email protected]>
Subject: Re: Duplicate Key Values

On 3/5/25 15:37, Ron Johnson wrote:
> What does "and unique identifier" mean?
>
> (Creating a Primary Key constraint automatically creates a unique
> no-nulls-allowed index on the column(s), so no other index is needed.)
>
> Can you show the table definition?
>
> Anyway, you /should/ be able to delete one of the duplicate node_id
> records by specifying another column with a different value;
>
> On Wed, Mar 5, 2025 at 6:14 PM mark bradley <[email protected]
> <mailto:[email protected]>> wrote:
>
>     Hi Ron,
>
>     The key is an integer.  I'm using pGAdmin4 and recently updated to
>     the latest version.

1) Did you not see duplicates with the old version of pgAdmin4?

2) What do you see if you use psql?

3) Did you upgrade/move the Postgres server or the underlying OS?

4) Have you tried reindexing the node_id field?

>
>     The records are not all identical, some have NULL values of the
>     non-key for some unknown reason.  Here is a screenshot.  The key is
>     node_id, which I have specified as a key and unique identifier.
>
>
>


--
Adrian Klaver
[email protected]





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