Re: Removing duplicate rows in table
От | Rich Shepard |
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Тема | Re: Removing duplicate rows in table |
Дата | |
Msg-id | 41c47eb5-f6b-8e29-98e6-f6b1fa733bb@appl-ecosys.com обсуждение исходный текст |
Ответ на | Re: Removing duplicate rows in table (Adrian Klaver <adrian.klaver@aklaver.com>) |
Ответы |
Re: Removing duplicate rows in table
Re: Removing duplicate rows in table |
Список | 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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