On Wed, Feb 24, 2010 at 10:09 PM, Tom Lane
<tgl@sss.pgh.pa.us> wrote:
"Kevin Grittner" <
Kevin.Grittner@wicourts.gov> writes:
> So you are essentially proposing that rather than moving the heap
> data into the leaf tuples of the index in the index file, you will
> move the leaf index data into the heap tuples? The pages in such a
> IOT heap file would still need to look a lot like index pages, yes?
> I'm not saying it's a bad idea, but I'm curious what benefits you
> see to taking that approach.
regards, tom lane
No Tom, Grouped index tuple doesn't use the B+ Tree data structure to achieve the sorting, so it will not guarantee 100% clustering of data.
Gokul.
