From: Jim C. Nasby <jnasby@pervasive.com>
To: Ruben Rubio Rey <ruben@rentalia.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Array performance
Date: Fri, 24 Mar 2006 07:06:19 -0600
Message-ID: <20060324130619.GF90527@pervasive.com> (raw)
In-Reply-To: <4423EDA9.3090502@rentalia.com>
References: <200603170625.k2H6PJ926955@pillette.com>
<1143112188.2810.27.camel@theo-laptop.int.coza.net.za>
<20060323132448.GB4881@surnet.cl>
<4423E90E.2090607@rentalia.com>
<20060324125245.GB90527@pervasive.com>
<4423EDA9.3090502@rentalia.com>
On Fri, Mar 24, 2006 at 02:01:29PM +0100, Ruben Rubio Rey wrote:
> >http://www.varlena.com/GeneralBits/109.php might provide some useful
> >insights. I also recall seeing something about sum operators for arrays,
> >but I can't recall where.
> >
> >
> I ll check it out, seems to be very useful
> Is faster create a function to sum the array?
There's been talk of having one, but I don't think any such thing
currently exists.
> >>AND array[20]<>0
> >>AND array[21]<>0
> >>...
> >>AND array[50]<>0
> >>AND array[51])<>0
> >>
> >>
> >
> >Uhm... please don't tell me that you're using 0 in place of NULL...
> >
> >
> mmm ... i have read in postgres documentation that null values on arrays
> are not supported ...
Damn, you're right. Another reason I tend to stay away from them...
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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To: pgsql-performance@postgresql.org
Cc: jnasby@pervasive.com, ruben@rentalia.com
Subject: Re: Array performance
In-Reply-To: <20060324130619.GF90527@pervasive.com>
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