James Shaw a écrit : > The example given has "Seq Scan on tenk1 (cost=0.00..458.00" in the > example, but then says, "you will find out that |tenk1| has 358 disk > pages" and "the cost is estimated at 358 page reads". Shouldn't this be > 458 disk page reads? > > I couldn't see this already discussed on this list. Is there a URL that > has the latest docs compiled from CVS? >
http://momjian.us/main/writings/pgsql/sgml/ (built every five minutes) Regards. -- Guillaume. http://www.postgresqlfr.org http://dalibo.com ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
