| From: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com> |
|---|---|
| To: | Ruben Rubio Rey <ruben(at)rentalia(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Array performance |
| Date: | 2006-03-24 13:06:19 |
| Message-ID: | 20060324130619.GF90527@pervasive.com |
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| Thread: | |
| Lists: | pgsql-performance |
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(at)pervasive(dot)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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