create table scalar_types (
  key text primary key not null,
  created_at timestamptz not null default now()
);

insert into scalar_types (key) values ('boolean');
insert into scalar_types (key) values ('date-iso8601');
insert into scalar_types (key) values ('date-time-iso8601');
insert into scalar_types (key) values ('decimal');
insert into scalar_types (key) values ('double');
insert into scalar_types (key) values ('integer');
insert into scalar_types (key) values ('long');
insert into scalar_types (key) values ('string');
insert into scalar_types (key) values ('uuid');
insert into scalar_types (key) values ('object');