Am Dienstag, 11. Juli 2006 23:01 schrieb Alvaro Herrera:
> One exception is that we can't do that with full vacuums. The reason is
> that full vacuum may want to run user-defined functions to be able to
> index the tuples it moves. This isn't a problem normally, except in the
> case where the function tries to scan some other table: if we ignored
> that transaction, then another lazy vacuum might delete tuples from that
> table that we need to see.
Functions in the index expression must be immutable, so I don't think that is
a real concern.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
