Oleg Bartunov wrote:
> The big issue with LIMIT,OFFSET is that it still use all rows
> for sorting. I already suggested to use partial sorting to avoid
> sorting all rows if one selected only first 20 row, for example.
> It's very important for Web applications because web users usually
> read first 1-2 pages. Our experimnets have shown 6 times performance
> win when using partial sorting.
That is interesting. I haven't even dared to ask for this.
Did you contribute that partial sorting code to postgresql?
thanks,
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow@regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org