Joe,
> how can i implement transactions inside my plpgsql functions
You can't.
Each PL/pgSQL function is automatically treated as a single transaction
by Postgres. As such, the entire function either succeeds or fails.
To manage a transaction *inside* the PL/pgSQL function, Postgres would
have to support nested transactions ... which we currently don't.Nested transactions and MVCC are somewhat of a tangle
toreconcile,
and we don't expect a solution until Postgres 8.0 (if then).
-Josh Berkus
