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unique in two not so unique columns - Mailing list pgsql-general

From Thomas T. Thai
Subject unique in two not so unique columns
Date
Msg-id Pine.NEB.4.43.0211020055500.15774-100000@ns01.minnesota.com
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Responses Re: unique in two not so unique columns  (Martijn van Oosterhout <kleptog@svana.org>)
Re: unique in two not so unique columns  (Tino Wildenhain <tino@wildenhain.de>)
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I have two columns in a table:

email     varchar(64)
verified  boolean

How do I make a check for unique email that is verified while allowing for
non-verified emails to be not unique?

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