>> Why not just enhance PL/pgsql
>
> plpgsql is based on PL/SQL and it is ADA. PSM is relative unique
> language - similar to modula with one significant feature - handlers -
> so ADA and PSM are different languages with different syntax.
Also, PSM is implemented by MySQL and DB2, so having it helps people
migrate applications.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com