Some of the records contain emails and some do not. I am not allowed to have null values in the email column. For whatever reason, the client has chosen to use the email as a primary key, so, for those records that have no email, I need them to populate with email@example.com, but in sequence so that each email is unique (i.e. firstname.lastname@example.org, email@example.com, etc.). Is there a way to do this in Postgres ?
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