Is this a TODO? ---------------------------------------------------------------------------
Josh Berkus wrote: > Kemin, > > > Just noticed that the postgres stddev is the stddev_sample formula. > > There are two different ways to calculate this value. > > Their difference is very small with large samle size. It would be nice > > to distinguish the two different versions. > > Note sent to PGSQL-DOCS. > > > I also noticed that oracle has stddev_sample and stddev_population. > > This is just a wish list. > > Were you aware that in PostgreSQL you can write your own aggregates? It's > relatively easy to do. > > -- > Josh Berkus > Aglio Database Solutions > San Francisco > > ---------------------------(end of broadcast)--------------------------- > TIP 9: the planner will ignore your desire to choose an index scan if your > joining column's datatypes do not match > -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
