Inline PL/pgSQL

Hey everyone,

In addition to package support in plpgsql, it would be really handy to
have inline plpgsql. Likewise, I think there are others who feel this
way as-well.

Years ago, Oracle merged PL/SQL with their normal SQL parser which
allowed for inline PL/SQL. They did this because it was difficult to
maintain two separate parsers. While this worked great for Oracle, it
probably wouldn't really work as well for PostgreSQL because pgsql
supports multiple procedural languages.

As for implementation, I think it would obviously be best to leave
plpgsql on its own as a PL but maybe change BEGIN and DECLARE in the
normal parser and have the system generate/execute a function on the
fly. Or, maybe it would be better to integrate plpgsql. Or, I may just
be crazy.

Would anyone else ever benefit from inline functions? Does anyone have
any ideas about implementation? Please shoot your opinions this way.
Thanks.

-Jonah