On Friday, April 3, 2026, PG Doc comments form <[email protected]> wrote:
> The following documentation comment has been logged on the website: > > Page: https://www.postgresql.org/docs/18/ddl.html > Description: > > Unlike UNIQUE or CHECK, NOT NULL cannot be used standalone at the table > level in a standard way > Example: CREATE TABLE t (a int, NOT NULL a); fails. > It only works as an "out-of-line" constraint in very specific inheritance > scenarios. > As of v18 it works. v17 and earlier do not document it. David J.
