Redshift. Convert comma delimited values into rows

Question

I am wondering how to convert comma-delimited values into rows in Redshift. I am afraid that my own solution isn\'t optimal. Please advise. I have table with one of the colu

Answer 1

Just improvement for the answer above https://stackoverflow.com/a/31998832/1265306

Is generating numbers table using the following SQL https://discourse.looker.com/t/generating-a-numbers-table-in-mysql-and-redshift/482

SELECT 
  p0.n 
  + p1.n*2 
  + p2.n * POWER(2,2) 
  + p3.n * POWER(2,3)
  + p4.n * POWER(2,4)
  + p5.n * POWER(2,5)
  + p6.n * POWER(2,6)
  + p7.n * POWER(2,7) 
  as number  
INTO numbers
FROM  
  (SELECT 0 as n UNION SELECT 1) p0,  
  (SELECT 0 as n UNION SELECT 1) p1,  
  (SELECT 0 as n UNION SELECT 1) p2, 
  (SELECT 0 as n UNION SELECT 1) p3,
  (SELECT 0 as n UNION SELECT 1) p4,
  (SELECT 0 as n UNION SELECT 1) p5,
  (SELECT 0 as n UNION SELECT 1) p6,
  (SELECT 0 as n UNION SELECT 1) p7
ORDER BY 1
LIMIT 100

"ORDER BY" is there only in case you want paste it without the INTO clause and see the results