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 to reconcile, and we don't expect a solution until Postgres 8.0 (if then). -Josh Berkus ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org