| From: | Rich Shepard <rshepard(at)appl-ecosys(dot)com> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Removing duplicate rows in table |
| Date: | 2024-09-10 16:38:57 |
| Message-ID: | 41c47eb5-f6b-8e29-98e6-f6b1fa733bb@appl-ecosys.com |
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| Lists: | pgsql-general |
On Tue, 10 Sep 2024, Adrian Klaver wrote:
> You might want to do something like:
>
> select proj_nbr, count(*) as ct from projects group by proj_nbr;
>
> to see how big a problem it is. If it is only a few projects it could just a
> matter of manually deleting the extras.
Adrian,
It's a small table, not updated in a while. Looking at the example I sent
how do I delete the extras while keeping one when each row has the same
content? Not knowing how to do that is why I wrote.
> Whatever you do:
> 1) Make sure you have a backup of at least that table.
> 2) Do the data changes as BEGIN; <changes> COMMIT; or ROLLBACK;
Yep. Learned that lesson.
Thanks,
Rich
P.S. Please reply to the mail list so I receive only one copy of your
message, not two.
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