On Mon, Aug 01, 2011 at 04:42:23PM +0200, Willy-Bas Loos wrote: > Hi, > > I'ver been wondering how to set the number of rows that are scanned by > analyze. (I want to increase it) > I couln't find it at first but when i read closer i found that is does: > "The largest statistics target among the columns being analyzed > determines the number of table rows sampled to prepare the > statistics." > (http://www.postgresql.org/docs/8.4/interactive/sql-analyze.html) > > > My question is *HOW* does it "detirmine the number of table rows > sampled" with the statistics target? > What is the formula behind it? > > I am not familiar enough with the source code to figure that out > myself. sry about that. > Would be good to include in the docs if we find out. > > Cheers, > > WBL > Peruse the above reference a bit more carefully. It is actually explained pretty well. Regards, Ken -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
