> Zeugswetter Andreas SB <[EMAIL PROTECTED]> writes:
> >> I am working on eliminating the "relation NNN modified
> while in use"
> >> misfeature by instead grabbing a lock on each relation at first use
> >> in a statement, and holding that lock till end of transaction.
>
> > As anticipated, I object :-)
>
> Your objection is founded on two misunderstandings. In the
> first place, we are *always* inside a transaction when executing
> a query. It may be an implicit one-statement transaction, but it's
> still a transaction.
> In the second place, we already grab locks that we do not release till
> end of xact for all user-level queries. The problem is that we grab
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Even for select?
> them too late, ie, in the executor. I'm just planning to move up the
> grab till first use.
BTW, what about indices?
Vadim
