Re: Transactions within a function body

Dennis Brakhane escribió:
> On Wed, Oct 1, 2008 at 5:54 PM, Reg Me Please <regmeplease@gmail.com> wrote:
> > Hi all.
> >
> > Is there a way to have (sub)transactions within a function body?
> > I'd like to execute some code (a transaction!) inside a function and later
> > decide whether that transaction is to be committed or not.
>
> You could issue a "SAVEPOINT name". If at the end you don't want your
> changes to apply, you can issue a "ROLLBACK to name"

Actually you can't use SAVEPOINT nor ROLLBACK TO within a function.  In
PL/pgSQL you can use EXCEPTION blocks (if you don't like the changes,
just do a RAISE EXCEPTION, and the exception block is run).

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support