Claudio Freire writes:
> Did you try increasing the statistic targets?
> AFAIK, it looks a lot like the planner is missing stats, since it
> estimates the index query on idx_nfi_newsfeed will fetch 10k rows -
> instead of 25.
BTW, this is the right suggestion, but for the wrong reason. You seem
thank's a lot guys, I will try that out.
regards
Dieter
Am 12.04.2011 um 11:07 schrieb Claudio Freire:
On Tue, Apr 12, 2011 at 10:59 AM, Dieter Rehbein
wrote:
> I just executed a VACUUM ANALYZE and now everything performs well. hm,
> strange.
That probably means you need more statistics -
> On Tue, Apr 12, 2011 at 10:59 AM, Dieter Rehbein
> wrote:
>> I just executed a VACUUM ANALYZE and now everything performs well. hm,
>> strange.
>
> That probably means you need more statistics - try increasing the
> newsfeed's statistics target count.
>
> ALTER TABLE newsfeed_item ALTER COLUMN n
On Tue, Apr 12, 2011 at 10:59 AM, Dieter Rehbein
wrote:
> I just executed a VACUUM ANALYZE and now everything performs well. hm,
> strange.
That probably means you need more statistics - try increasing the
newsfeed's statistics target count.
ALTER TABLE newsfeed_item ALTER COLUMN newsfeed SET S
what I did, was an ANALYZE, which did not change anything.
I just executed a VACUUM ANALYZE and now everything performs well. hm, strange.
thanks
Dieter
Am 12.04.2011 um 09:42 schrieb Claudio Freire:
On Tue, Apr 12, 2011 at 7:20 AM, Dieter Rehbein
wrote:
> Hi everybody,
>
> I have a perfor
On Tue, Apr 12, 2011 at 7:20 AM, Dieter Rehbein
wrote:
> Hi everybody,
>
> I have a performance-problem with a query using a LIMIT. There are other
> threads rergading performance issues with LIMIT, but I didn't find useful
> hints for our problem and it might
> be interesting for other postgres
Hi everybody,
I have a performance-problem with a query using a LIMIT. There are other
threads rergading performance issues with LIMIT, but I didn't find useful hints
for our problem and it might
be interesting for other postgres-users.
There are only 2 simple tables:
CREATE TABLE newsfeed
(
