Re: OUTER JOIN IS SLOW

....adding to the last email, for now try the work_mem but you should be
adding ANALYZE along with the VACUUM (with a cron job I guess) you do
regularly.

------------
Shoaib Mir
EntperpriseDB (www.enterprisedb.com)

On 12/24/06, Shoaib Mir <shoaibmir(at)gmail(dot)com> wrote:
>
> Try increasing the work_mem first to see the change, that might help.
>
> -------------
> Shoaib Mir
> EnterpriseDB (www.enterprisedb.com)
>
> On 12/24/06, Benjamin Arai <benjamin(at)araisoft(dot)com> wrote:
> >
> > I have been running pieces of my PL function by hand and I have found
> > that the following queries work by themselves taking less than a second
> > to execute.
> >
> > getDateRange"('12/1/2005','12/1/2006') <- simply generates a date
> > list. Doesn't even access a table
> >
> > SELECT * FROM mutualfd_weekday_qbid WHERE cusip='92193920' AND pkey >=
> > '12/15/2005' AND pkey <= '12/15/2006';
> >
> > But when combined as below it takes 10 seconds to execute.
> >
> > SELECT d1 as date, d2.data as data FROM
> > "getDateRange"('12/1/2005','12/1/2006') d1 FULL OUTER JOIN (SELECT *
> > FROM mutualfd_weekday_qbid WHERE cusip='92193920' AND pkey >=
> > '12/15/2005' AND pkey <= '12/15/2006') d2 ON d1=d2.pkey;
> >
> > Do I need to increase the work_mem or is this possible still a ANALYZE
> > issue?
> >
> > Benjamin
> >
> > ---------------------------(end of broadcast)---------------------------
> >
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>
>