> On Mon, Mar 19, 2012 at 6:17 PM, Josh Berkus <josh@agliodbs.com> wrote: > > On 3/18/12 8:11 PM, HuangQi wrote: > >> The implementation seems to be done quite fully. There is even a patch > >> file. Why is the implementation not added into the release of Postgres? As > >> so much has already being done, what could I do in this case for the Gsoc? > > > > That would be good for you to research. archives.postgresql.org will > > help you find the discussions around that. > > I actually tried to find out, personally...not sure if I was searching > wrongly, but searching for TABLESAMPLE did not yield a cornucopia of > useful conversations at the right time in history (~2007), even when > the search is given a broad date-horizon (all), so I, too, an > uninformed as to the specific objections. > > http://www.postgresql.org/search/?m=1&q=TABLESAMPLE&l=&d=-1&s=d >
I sent a mail to Nail Conway asking him about this. Hope he could give a good answer.
While waiting for the response, how about the skip scan? Daniel mentioned there is still some unknown.
I searched this mail thread suggesting the skip scan to TODO list.
