Re: cataloguing NOT NULL constraints

On 2022-Sep-19, Isaac Morland wrote:

> I thought I saw some discussion about the SQL standard saying that there is
> a difference between putting NOT NULL in a column definition, and CHECK
> (column_name NOT NULL). So if we're going to take this seriously,

Was it Peter E.'s reply to this thread?

https://postgr.es/m/bac841ed-b86d-e3c2-030d-02a3db067307@enterprisedb.com

because if it wasn't there, then I would like to know what you source
is.

-- 
Álvaro Herrera         PostgreSQL Developer  —  https://www.EnterpriseDB.com/
"Thou shalt not follow the NULL pointer, for chaos and madness await
thee at its end." (2nd Commandment for C programmers)