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From: jian he <[email protected]>
To: Philip Couling <[email protected]>
Cc: [email protected]
Subject: Re: Validating check constraints without a table scan?
Date: Wed, 20 Nov 2024 17:45:39 +0800
Message-ID: <CACJufxEeiT7kDS=x8jC25n+vtmxPQsW9zN_qgEtbpqH4dF-Dyw@mail.gmail.com> (raw)
In-Reply-To: <CANWftzK2MZ7Js_56V+ZcLxZyH1utBZx4uEg03P7Cee86K2roCQ@mail.gmail.com>
References: <CANWftzK2MZ7Js_56V+ZcLxZyH1utBZx4uEg03P7Cee86K2roCQ@mail.gmail.com>

On Fri, Nov 15, 2024 at 4:38 PM Philip Couling <[email protected]> wrote:
>
> Is there a solid reason why adding a check constraint does not use existing indexes for validation.
>

can you give an sql example (except not-null)
where indexes can be used for check constraint validation?
i am not sure I understand it correctly.

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