generated_column_example.sql

create table users (
  name     text    primary key,
  age      int     not null,
  is_adult boolean generated always as (age >= 18) stored
);

insert into users
       (name, age)
values ('Zola', 54),
       ('Rimbaud', 8);

select is_adult
  from users
 where name = 'Zola';
 
-- is_adult
-- --------
-- true
-- false