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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2003-09-13 21:44:50 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2003-09-13 21:44:50 +0000 |
| commit | c472b8366f5bec1da4d5d5b894f47508bbc8d5d6 (patch) | |
| tree | 26615ebe830975a50b1698dece1286e1adecaa52 /contrib/tablefunc/README.tablefunc | |
| parent | 94a13b8a117c134a18ae37764c5524874b479db2 (diff) | |
| download | postgresql-c472b8366f5bec1da4d5d5b894f47508bbc8d5d6.tar.gz | |
With Joe Conway's concurrence, remove srandom() call from normal_rand().
This was the last piece of code that took it upon itself to reset the
random number sequence --- now we only have srandom() in postmaster start,
backend start, and explicit setseed() operations.
Diffstat (limited to 'contrib/tablefunc/README.tablefunc')
| -rw-r--r-- | contrib/tablefunc/README.tablefunc | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/contrib/tablefunc/README.tablefunc b/contrib/tablefunc/README.tablefunc index b80899e957..ddae931319 100644 --- a/contrib/tablefunc/README.tablefunc +++ b/contrib/tablefunc/README.tablefunc @@ -48,7 +48,7 @@ Installation: installs following functions into database template1: - normal_rand(int numvals, float8 mean, float8 stddev, int seed) + normal_rand(int numvals, float8 mean, float8 stddev) - returns a set of normally distributed float8 values crosstabN(text sql) @@ -74,12 +74,12 @@ Documentation ================================================================== Name -normal_rand(int, float8, float8, int) - returns a set of normally +normal_rand(int, float8, float8) - returns a set of normally distributed float8 values Synopsis -normal_rand(int numvals, float8 mean, float8 stddev, int seed) +normal_rand(int numvals, float8 mean, float8 stddev) Inputs @@ -92,9 +92,6 @@ Inputs stddev the standard deviation of the normal distribution of values - seed - a seed value for the pseudo-random number generator - Outputs Returns setof float8, where the returned set of random values are normally @@ -103,7 +100,7 @@ Outputs Example usage test=# SELECT * FROM - test=# normal_rand(1000, 5, 3, EXTRACT(SECONDS FROM CURRENT_TIME(0))::int); + test=# normal_rand(1000, 5, 3); normal_rand ---------------------- 1.56556322244898 |