Search Postgresql Archives

Re: Interpreting EXPLAIN ANALYSE

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

 



On Fri, June 3, 2011 13:57, tv@xxxxxxxx wrote:
> See this http://explain.depesz.com/s/THh
>
>
> There's something very wrong with snames - the planner expects 22 rows but
> gets 164147851. Which probably causes a bad plan choice or something like that.
> Try to analyze the snames table (and maybe increase the statistics
> target on the columns).

Thanks - like you say, looks like the interesting bit is:

rows=22  --> rows=164147851 for table snames.

Nice online tool you have there my china!

Cheers
Henry


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


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux