Postgresql: how to create table only if it does not already exist?

Question

In Postgresql, how can I do a condition to create a table only if it does not already exist?

Code example appreciated.

Answer 1

I think to check the pg_class table perhaps help you, something like that:

SELECT COUNT (relname) as a FROM pg_class WHERE relname = 'mytable'

if a = 0 then (CREATE IT)

Regards.