Timestamp Difference In Hours for PostgreSQL

Question

Is there a TIMESTAMPDIFF() equivalent for PostgreSQL?

I know I can subtract two timestamps to get a postgresql INTERVAL. I just want the

Answer 1

Get fields where a timestamp is greater than date in postgresql:

SELECT * from yourtable 
WHERE your_timestamp_field > to_date('05 Dec 2000', 'DD Mon YYYY');

Subtract minutes from timestamp in postgresql:

SELECT * from yourtable 
WHERE your_timestamp_field > current_timestamp - interval '5 minutes'

Subtract hours from timestamp in postgresql:

SELECT * from yourtable 
WHERE your_timestamp_field > current_timestamp - interval '5 hours'