2 Commits

Author	SHA1	Message	Date
Bruce Momjian	6fff9a7475	The attached removes the current non-standard file ... "contrib/tablefunc/tablefunc-test.sql", and adds a standard regression test suite to contrib/tablefunc. Joe Conway	2002-09-12 00:14:40 +00:00
Bruce Momjian	41f862ba87	As mentioned above, here is my contrib/tablefunc patch. It includes ... three functions which exercise the tablefunc API. show_all_settings() - returns the same information as SHOW ALL, but as a query result normal_rand(int numvals, float8 mean, float8 stddev, int seed) - returns a set of normally distributed float8 values - This routine implements Algorithm P (Polar method for normal deviates) from Knuth's _The_Art_of_Computer_Programming_, Volume 2, 3rd ed., pages 122-126. Knuth cites his source as "The polar method", G. E. P. Box, M. E. Muller, and G. Marsaglia, _Annals_Math,_Stat._ 29 (1958), 610-611. crosstabN(text sql) - returns a set of row_name plus N category value columns - crosstab2(), crosstab3(), and crosstab4() are defined for you, but you can create additional crosstab functions per directions in the README. Joe Conway	2002-07-30 16:31:11 +00:00