Thread

Re: BUG #19351: in pg18.1,when not null exists in the table , and add constraint problem.

Álvaro Herrera <alvherre@kurilemu.de> — 2025-12-11T07:29:45Z

On 2025-Dec-10, Srinath Reddy Sadipiralla wrote:

> ah... just after a quick code lookup, remembered that
> "not null" is treated as a column property, which is a
> flag in pg_attribute catalog table named as "attnotnull",

This is no longer true in 18.
https://www.enterprisedb.com/blog/changes-not-null-postgres-18

-- 
Álvaro Herrera        Breisgau, Deutschland  —  https://www.EnterpriseDB.com/
"Fundamental layering violations tend to bite you on tender
parts of your anatomy."                          (Tom Lane)
https://postgr.es/m/2818249.1748706121@sss.pgh.pa.us