"Jonah H. Harris" <jonah.harris@gmail.com> writes:
> Yep. However, I've wanted to add a constrained, fixed-length version
> of bytea for some time now; it's just not high on my priority list.
If you're expecting that you'll be able to write BYTEA(n) and avoid
storing a length word, you'll find that it's not a trivial matter.
regards, tom lane