Any better Fibonacci series generator using pure Oracle SQL?

Question

I wonder if there is any way to generate Fibonacci numbers that beat in simplicity and efficiency this one I wrote:

WITH d (seq) AS
       (SELECT     LEVEL
         


        

Answer 1

You can use a recursive sub-query factoring clause:

WITH fib ( lvl, value, next ) AS (
  SELECT 1, 0, 1
  FROM DUAL
UNION ALL
  SELECT lvl + 1, next, value + next
  FROM fib
  WHERE lvl < 195
)
SELECT lvl, value FROM fib