Peter Eisentraut <[EMAIL PROTECTED]> writes:
> Am Montag, 31. März 2008 schrieb Tom Lane:
>> I've forgotten the context ... what's the whole query and plan again?
>> And which PG version exactly?
> Please see http://archives.postgresql.org/pgsql-hackers/2008-01/msg00048.php
Hm. Now that I think
Am Montag, 31. März 2008 schrieb Tom Lane:
> Peter Eisentraut <[EMAIL PROTECTED]> writes:
> > OK, first results with this patch are in: The selectivity estimations are
> > adjusted nicely, but the cost calculation doesn't change at all. Before:
>
> I've forgotten the context ... what's the whole q
Peter Eisentraut <[EMAIL PROTECTED]> writes:
> OK, first results with this patch are in: The selectivity estimations are
> adjusted nicely, but the cost calculation doesn't change at all. Before:
I've forgotten the context ... what's the whole query and plan again?
And which PG version exactly?
Am Donnerstag, 6. März 2008 schrieb Tom Lane:
> What I propose doing about this is a small variant on Peter's original
> suggestion: compute the estimated selectivity for
> col = 'prefix'
> and clamp the result of prefix_selectivity to be at least that.
OK, first results with this patch ar
