Reg. Postgres Unique contraint

From: Sajjad Abid <abidsajjad(at)gmail(dot)com>
To: pgsql-performance(at)lists(dot)postgresql(dot)org
Subject: Reg. Postgres Unique contraint
Date: 2024-11-27 04:14:36
Message-ID: CANjRhAF0yQ2k0cQXGe=00UJD9W4N2thXoC6=e-pVXk_YEOM-6w@mail.gmail.com
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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*

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