Postgresql: random function in query

Trabla: Postgresql: random function in query

Solving:

SELECT random();

Result:
  random
  double precision
  0.749302998185158

Example:
Get random int from 0 to 100

SELECT (random()*100)::int ;

Result:
  int4
  integer
  24

Official Docs:
http://www.postgresql.org/docs/8.2/static/functions-math.html