On Sat, Jan 21, 2006 at 12:00:49AM +0100, SunWuKung wrote: > Does somebody have/know of a function for pg returning the standard > normal cumulative distribution for a Z score? Are you looking for something like this? test=> SELECT z, cdf_ugaussian_p(z) FROM generate_series(-3, 3) AS g(z); z | cdf_ugaussian_p ----+--------------------- -3 | 0.00134989803163009 -2 | 0.0227501319481792 -1 | 0.158655253931457 0 | 0.5 1 | 0.841344746068543 2 | 0.977249868051821 3 | 0.99865010196837 (7 rows) cdf_ugaussian_p() is just a little wrapper I put around the GNU Scientific Library's gsl_cdf_ugaussian_P() function. I can post an example of how to do that if it's what you're looking for. -- Michael Fuhr
