Re: Reducing data type space usage

Bruce Momjian  writes:
> FYI, we also need to figure out how to store a zero-length string.  That
> will probably be high-bit, and then all zero bits.  We don't store a
> zero-byte in strings, so that should be unique for "".

No, it'll be a 1-byte header with length indicating that no bytes
follow, which likely will be 10000001 rather than 10000000 ... but
in either case there is no ambiguity involved.
		regards, tom lane