On Wed, Sep 15, 2004 at 23:29:43 +0300,
Alexander Kirpa <[EMAIL PROTECTED]> wrote:
> On 15 Sep 2004, at 12:21, Bruno Wolff III wrote:
>
> Regarding your point of view possible exist reason for remove
> optimization for case like below
> SELECT count(*) from x where id>1 AND id<0
> I basically do
On 15 Sep 2004, at 12:21, Bruno Wolff III wrote:
> On Tue, Sep 14, 2004 at 00:57:07 +0100,
> PostgreSQL Bugs List <[EMAIL PROTECTED]> wrote:
> >
> > Description:Optimization of SELECT for NOT NULL case
> >
> > Details:
> >
> > CREATE TABLE x (id int4 NOT NULL);
> > Populate table, fo
Bruno Wolff III <[EMAIL PROTECTED]> writes:
> On Tue, Sep 14, 2004 at 00:57:07 +0100,
>> CREATE TABLE x (id int4 NOT NULL);
>> SELECT count(*) from x WHERE x IS NULL;
>> Optimizator should rewrite "x IS NULL" to simple "false"
> Based on responses to other optimization requests I have seen, I thin
On Tue, Sep 14, 2004 at 00:57:07 +0100,
PostgreSQL Bugs List <[EMAIL PROTECTED]> wrote:
>
> Description:Optimization of SELECT for NOT NULL case
>
> Details:
>
> CREATE TABLE x (id int4 NOT NULL);
> Populate table, for instance, 10M rows;
> SELECT count(*) from x WHERE x IS NULL;
> Op
The following bug has been logged online:
Bug reference: 1252
Logged by: Alexander Kirpa
Email address: [EMAIL PROTECTED]
PostgreSQL version: 8.0 Beta
Operating system: FreeBSD 5.2.1
Description:Optimization of SELECT for NOT NULL case
Details:
CREATE TABLE x (
