[Monetdb-developers] GDK::BAT_select_ problem

RichardGUO Fei gladiatorcn at hotmail.com
Sun May 24 19:17:11 CEST 2009


Hi Niels,

It resolved my problem. Thank you so much!
 
> Date: Sun, 24 May 2009 08:46:36 +0200
> From: Niels.Nes at cwi.nl
> To: gladiatorcn at hotmail.com
> CC: monetdb-developers at lists.sourceforge.net
> Subject: Re: [Monetdb-developers] GDK::BAT_select_ problem
> 
> On Sat, May 23, 2009 at 11:04:16PM +0000, RichardGUO Fei wrote:
> > Hi,
> > 
> > I am doing some developments in GDK. More concretely, I want to
> > modify the behavior of a SQL select statement. I print some
> > messages in BAT_select_ as I think that most of SQL selects
> > would be compiled into plusieur BATselects. Is that right?
> > 
> > I used mserver --dbinit 'include sql;' to start, and saw some
> > messages coming out (BAT_select_ is also used for
> > authentication). However, after I logged in by using mclient -l
> > sql, no matter what kind of SELECT I performed, there was just
> > no message. Was BAT_select_ called after all in this case?
> 
> The easiest way to get output (debug statements) from gdk is
> to run using mclient with -fraw and use --algo and --performance
> on the mserver5.
> 
> Niels
> > 
> > Thank you very much for your responses.
> > 
> > Regards,
> > Richard
> > __________________________________________________________
> > 
> > Á¢¿ÌÏÂÔØ MSN ±£»¤¶Ü£¬±£ÕÏ MSN °²È«Îȶ¨£¡ [1]ÏÖÔÚ¾ÍÏÂÔØ£¡
> > 
> > References
> > 
> > 1. http://im.live.cn/safe/
> 
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> 
> -- 
> Niels Nes, Centre for Mathematics and Computer Science (CWI)
> Science Park 123, 1098 XG 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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