> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:pgsql-hackers-
> [EMAIL PROTECTED] On Behalf Of Joshua D. Drake
> Sent: Friday, June 08, 2007 10:49 PM
> To: Alvaro Herrera
> Cc: Matthew T. O'Connor; Jim C. Nasby; Michael Paesold; Tom Lane; Andrew
> Hammond; Peter Eisentraut; pgsql-hackers@postgresql.org
> Subject: Re: [HACKERS] Autovacuum launcher doesn't notice death of
> postmaster immediately
>
> Alvaro Herrera wrote:
> > Matthew T. O'Connor escribió:
> >
> >> Ok, but I think the question posed is that in say a virtual hosting
> >> environment there might be say 1,000 databases in the cluster.
>
> That is uhmmm insane... 1000 databases?
Not in a test environment. We have several hundred databases here. Of course,
only a few dozen (or at most ~100) are of any one type, but I can imagine that
under certain circumstances 1000 databases would not be unreasonable.
[snip]
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
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