Which are the SQL improvements you are waiting for?

Question

Dealing with SQL shows us some limitations and gives us an opportunity to imagine what could be.

Which improvements to SQL are you waiting for? Which would you put on t

Answer 1

Abstract tables and sub-classing

create abstract table person
  (
  id primary key,
   name varchar(50)
  );

create table concretePerson extends person
  (
  birth date,
  death date
  );

create table fictionalCharacter  extends person
  (
  creator int references concretePerson.id      
  );