: Freitag, 18. September 2009 17:43
An: Hell, Robert
Cc: t...@fuzzy.cz; pgsql-performance@postgresql.org
Betreff: Re: [PERFORM] Different query plans for the same query
"Hell, Robert" writes:
> bad plan (sometimes with statistcs target 100, seconds after the good plan
> was c
2009/9/18 :
>> Hi all,
>>
>> on our PostgreSQL 8.3.1 (CentOS 5.3 64-bit) two different query plans
>> for one of our (weird) queries are generated. One of the query plans
>> seems to be good (and is used most of the time). The other one is bad -
>> the query takes about 2 minutes and the database
"Hell, Robert" writes:
> bad plan (sometimes with statistcs target 100, seconds after the good plan
> was chosen) - about 2 minutes: http://explain.depesz.com/s/gcr
> good plan (most of the time with statistcs target 100) - about one second:
> http://explain.depesz.com/s/HX
> very good plan (wit
org
Betreff: Re: [PERFORM] Different query plans for the same query
> Hi all,
>
> on our PostgreSQL 8.3.1 (CentOS 5.3 64-bit) two different query plans
> for one of our (weird) queries are generated. One of the query plans
> seems to be good (and is used most of the time). The other one is b
> Hi all,
>
> on our PostgreSQL 8.3.1 (CentOS 5.3 64-bit) two different query plans
> for one of our (weird) queries are generated. One of the query plans
> seems to be good (and is used most of the time). The other one is bad -
> the query takes about 2 minutes and the database process, which is
>
Hi all,
on our PostgreSQL 8.3.1 (CentOS 5.3 64-bit) two different query plans
for one of our (weird) queries are generated. One of the query plans
seems to be good (and is used most of the time). The other one is bad -
the query takes about 2 minutes and the database process, which is
executing th
