Re: patch: Add JSON datatype to PostgreSQL (GSoC, WIP)

On Oct 19, 2010, at 12:17 PM, Robert Haas wrote:

> I think we should take a few steps back and ask why we think that
> binary encoding is the way to go.  We store XML as text, for example,
> and I can't remember any complaints about that on -bugs or
> -performance, so why do we think JSON will be different?  Binary
> encoding is a trade-off.  A well-designed binary encoding should make
> it quicker to extract a small chunk of a large JSON object and return
> it; however, it will also make it slower to return the whole object
> (because you're adding serialization overhead).  I haven't seen any
> analysis of which of those use cases is more important and why.

Maybe someone has numbers on that for the XML type?

Best,

David