How can I generate a series of repeating numbers in PostgreSQL?

Question

In PostgreSQL, is it possible to generate a series of repeating numbers? For example, I want to generate the numbers 1 to 10, with each number repeated 3 times:

Answer 1

I don't know if you can do use generate_series like that in PostgreSQL, but i would try a cross join:

SELECT x FROM
  (SELECT generate_series(1, 10) AS x) t1, 
  (SELECT generate_series(1, 3) as y) t2

Edit:

As generate_series already returns a table there's no need for SELECT in a Derived Table:

SELECT x FROM
  generate_series(1, 10) AS x, 
  generate_series(1, 3) as y