On Thu, Aug 9, 2012 at 4:00 AM, Stefan Keller wrote:
> Hi
>
> 2012/8/8 Jeff Janes :
>> On Tue, Aug 7, 2012 at 5:07 PM, Stefan Keller wrote:
>>> Hi Craig
>>>
>>> Clever proposal!
>>> I slightly tried to adapt it to the hstore involved.
>>> Now I'm having a weird problem that PG says that "relation
Hi
2012/8/8 Jeff Janes :
> On Tue, Aug 7, 2012 at 5:07 PM, Stefan Keller wrote:
>> Hi Craig
>>
>> Clever proposal!
>> I slightly tried to adapt it to the hstore involved.
>> Now I'm having a weird problem that PG says that "relation 'p' does not
>> exist".
>> Why does PG recognize table b in the
On Tue, Aug 7, 2012 at 5:07 PM, Stefan Keller wrote:
> Hi Craig
>
> Clever proposal!
> I slightly tried to adapt it to the hstore involved.
> Now I'm having a weird problem that PG says that "relation 'p' does not
> exist".
> Why does PG recognize table b in the subquery but not table p?
> Any id
Hi Craig
Clever proposal!
I slightly tried to adapt it to the hstore involved.
Now I'm having a weird problem that PG says that "relation 'p' does not exist".
Why does PG recognize table b in the subquery but not table p?
Any ideas?
-- Stefan
SELECT b.way AS building_geometry
FROM
(SELECT way
On Tue, Aug 7, 2012 at 5:01 AM, Stefan Keller wrote:
> Hi
>
> I have an interesting query to be optimized related to this one [1].
>
> The query definition is: Select all buildings that have more than 1
> pharmacies and more than 1 schools within a radius of 1000m.
>
> The problem is that I think
On 7 Srpen 2012, 14:22, Stefan Keller wrote:
> Your proposal lacks the requirement that it's the same building from
> where pharmacies and schools are reachable.
> But I think about.
I don't know the dataset so I've expected the osm_id to identify the
building - then the intersect should work as A
Your proposal lacks the requirement that it's the same building from
where pharmacies and schools are reachable.
But I think about.
Yours, S.
2012/8/7 Tomas Vondra :
> On 7 Srpen 2012, 14:01, Stefan Keller wrote:
>> Hi
>>
>> I have an interesting query to be optimized related to this one [1].
>>
On 7 Srpen 2012, 14:01, Stefan Keller wrote:
> Hi
>
> I have an interesting query to be optimized related to this one [1].
>
> The query definition is: Select all buildings that have more than 1
> pharmacies and more than 1 schools within a radius of 1000m.
>
> The problem is that I think that this
Hi
I have an interesting query to be optimized related to this one [1].
The query definition is: Select all buildings that have more than 1
pharmacies and more than 1 schools within a radius of 1000m.
The problem is that I think that this query is inherently O(n^2). In
fact the solution I propos
