MySQL to PostgreSQL: How to modify this SQL query?

Question

I have this MySQL query that makes use of MONTH() and YEAR():

SELECT 
  MONTH(created_at) AS month, 
  YEAR(created_at) AS year 
FR         


        

Answer 1

http://www.postgresql.org/docs/9.0/static/functions-datetime.html

SELECT 
  EXTRACT(MONTH FROM created_at) AS month, 
  EXTRACT(YEAR FROM created_at) AS year 
FROM users 
GROUP BY EXTRACT(MONTH FROM created_at), EXTRACT(YEAR FROM created_at)
ORDER BY EXTRACT(YEAR FROM created_at), EXTRACT(MONTH FROM created_at)

This syntax should work on PostgreSQL, Oracle and Teradata