[MonetDB-users] What is optimizer_stats()

Niels Nes Niels.Nes at cwi.nl
Wed Oct 3 23:07:16 CEST 2007

On Wed, Oct 03, 2007 at 01:51:04PM -0700, Pranav Vaidya wrote:
> Hi,
> I am new to MonetDB and I am trying to run the TPC-H benchmarks and I was
> able to successfully load and execute the benchmarks in MonetDB version 4. I
> also verified whether the tables were populated using Dbvis. However, what
> seems to fail is the lack of a function called optimizer_stats() in the
> run.all script. 
> Is this a procedure or a function defined additionally which is needed. And
> why is it not present ? Do I need to run some additional scripts to have
> this run.all script go through successfully without any errors.

Indeed you need to load this extra function.

run the following command with a running server.
mclient -lsql < src/sql/stats.sql

The calls to optimizer_stats() are however only needed for the nightly testing. 
For running experminents simply remove these calls.

> Thanks and Regards,
> Pranav.
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Niels Nes, Centre for Mathematics and Computer Science (CWI)
Kruislaan 413, 1098 SJ Amsterdam, The Netherlands
room C0.02,  phone ++31 20 592-4098, fax ++31 20 592-4312
url: http://www.cwi.nl/~niels   e-mail: Niels.Nes at cwi.nl

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