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RE: Reg. Postgres Unique contraint - Mailing list pgsql-performance

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Subject RE: Reg. Postgres Unique contraint
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Msg-id 004d01db5856$23bde1c0$6b39a540$@msym.fr
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In response to Re: Reg. Postgres Unique contraint  (Sajjad Abid <abidsajjad@gmail.com>)
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Hi,

 

Does the following query return something:

 

Select user_name, count(*) from your_table group by user_name having count(*) > 1

 

Best regards

 

Michel SALAIS

 

De : Sajjad Abid <abidsajjad@gmail.com>
Envoyé : mercredi 27 novembre 2024 05:28
À : Diomedes Dominguez <diomedes.dominguez@gmail.com>
Cc : pgsql-performance@lists.postgresql.org
Objet : Re: Reg. Postgres Unique contraint

 

Version of Postgres is 12.9

 

On Wed, Nov 27, 2024 at 9:49 AM Diomedes Dominguez <diomedes.dominguez@gmail.com> wrote:

Which version of Postgres are you using?

 

El mié, 27 de nov de 2024, 00:14, Sajjad Abid <abidsajjad@gmail.com> escribió:

A column is character varying(50), also on this column a unique constraint is defined, but I found some duplicate values in this column for some records

  user_name character varying(50) 

  CONSTRAINT  user_name_unq   UNIQUE ( user_name )

 

Kindly help me to resolve this issue.

 

--

Thanks & Regards,

Sajjad Abid


 

--

Thanks & Regards,

Sajjad Abid

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