Limits on PostgreSQL schema changes inside transactions?

Question

My database background is with Oracle, so I was surprised to discover that Postgres includes schema changes in transactions - if you begin one, create a table and then rollb

Answer 1

As of version 9.1 of PosgreSQL, it appears that schema create statements are indeed transactional.

select * from pg_namespace where nspname = 'foo';
 nspname | nspowner | nspacl 
---------+----------+--------
(0 rows)

begin;
create schema foo;
rollback;

select * from pg_namespace where nspname = 'foo';
 nspname | nspowner | nspacl 
---------+----------+--------
(0 rows)

begin;
create schema foo;
commit;

select * from pg_namespace where nspname = 'foo';
 nspname | nspowner | nspacl 
---------+----------+--------
 foo     |       10 | NULL
(1 row)