Re: Re: 512,600ms query becomes 7500ms... but why? Postgres 8.3 query planner quirk?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



2010/2/10 Bryce Nesbitt <bryce2@xxxxxxxxxxxxx>:
> Or, if you want to actually read that query plan, try:
> http://explain.depesz.com/s/qYq
>

hello,

check your work_mem sesttings. Hash join is very slow in your case.

Pavel

>
> --
> Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-performance
>

-- 
Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance

[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux