Stig,
> However, currently i miss the following in PG:
> SQL such as: GROUPING SETS, CUBE, ROLLUP. Also looking for WITH RECURSION
> for recursive SQL-queries.
yep, you and everyone else. Windowing aggregates are a big TODO. WITH
RECURSION was supposed to be done by Jonah Harris for 8.2 but he bailed.
Take a look at the CUBE contrib module for 8.2, it's enhanced.
> a very handy thing in mysql is FEDERATED tables that allows one to open a
> channel from one MySQL-server to another MySQL-server. Does PG have
> anything similar?
Yes, and for far more than MySQL covers:
dblink: /contrib/tablefunc in your PostgreSQL source
dbi-link: http://pgfoundry.org/projects/dbi-link
(note that this allows connecting to *any* tabular data source)
oracle link: http://pgfoundry.org/projects/oralink
mssql link: http://pgfoundry.org/projects/dblink-tds/
--
Josh Berkus
PostgreSQL @ Sun
San Francisco
