"Jim C. Nasby" <jnasby(at)pervasive(dot)com> writes:
> On Wed, Feb 22, 2006 at 10:18:48PM -0500, Tom Lane wrote:
>> The Datum is just a pointer into the original tuple in that case.
> That would still result in a speedup since you don't have to figure out
> where the field begins though, right? I'm curious as to how much this
> patch would help with sorting text...
Right. It would help just as much as in the integer case as far as
eliminating the time spent in heap_getattr is concerned. That would be
a smaller percentage of the whole, because bttextcmp is (a lot) slower
than btint4cmp, but that's no fault of the patch.
regards, tom lane