On 29 Apr 2010, at 19:21, Oliver Kohll - Mailing Lists wrote:
> The two plans (note I've been rewriting the field names for readability until
> now but haven't here):
>
> explain analyze SELECT year, sum(c) over (order by year)
> FROM (
> SELECT extract(year f
>
> Curious note - how does the non-subselect version and the subselect
> version compare performance-wise?
Magnus,
On a test table with 12,000 rows there's not much in it, the subselect has a
simpler plan but they both take practically the same time.
The two plans (note I've been rewriting th
On Thu, Apr 29, 2010 at 13:43, Oliver Kohll - Mailing Lists
wrote:
>>
>> Aren't you looking for something along the line of:
>>
>> SELECT year, sum(c) over (order by year)
>> FROM (
>> SELECT extract(year from signup_date) AS year, count(email_address) AS c
>> FROM email_list
>> GROUP BY extrac
>>
>> Aren't you looking for something along the line of:
>>
>> SELECT year, sum(c) over (order by year)
>> FROM (
>> SELECT extract(year from signup_date) AS year, count(email_address) AS c
>> FROM email_list
>> GROUP BY extract(year from signup_date)
>> )
>>
>> (adjust for typos, I didn't t
On 29 April 2010 11:39, Oliver Kohll - Mailing Lists <
oliver.li...@gtwm.co.uk> wrote:
>
> On 29 Apr 2010, at 10:01, Magnus Hagander wrote:
>
>
> select extract(year from signup_date),
>
> count(email_address),
>
> sum(count(email_address)) over (partition by 1 order by 1 asc rows
> unbounded pr
On 29 Apr 2010, at 10:01, Magnus Hagander wrote:
>>
>> select extract(year from signup_date),
>> count(email_address),
>> sum(count(email_address)) over (partition by 1 order by 1 asc rows
>> unbounded preceding)
>> from email_list group by 1 order by 1;
>>
>> Does anyone have any other ideas
On Thu, Apr 29, 2010 at 10:52, Oliver Kohll - Mailing Lists
wrote:
> Hello,
>
> Many thanks to andreas.kretschmer for this helpful reply about how to set up
> a window function to perform a running total:
> http://archives.postgresql.org/pgsql-general/2010-03/msg01122.php
>
> It works perfectly w
On Thu, Dec 04, 2008 at 05:53:06PM +, Carson Farmer wrote:
> Hi list,
>
> This is my first post to pgsql, so hopefully I'm not asking something
> that has been answered a thousand time before. I've looked online, and
> through the archives, but I haven't found anything that answers my
> q
2008/12/4 Carson Farmer <[EMAIL PROTECTED]>:
> Hi list,
>
> This is my first post to pgsql, so hopefully I'm not asking something that
> has been answered a thousand time before. I've looked online, and through
> the archives, but I haven't found anything that answers my question
> specifically:
>
On Thu, Dec 04, 2008 at 07:32:59PM +0100, Harald Fuchs wrote:
> In article <[EMAIL PROTECTED]>,
> Carson Farmer <[EMAIL PROTECTED]> writes:
>
> > date | user
> > --+-
> > 20050201 | Bill
> > 20050210 | Steve
> > 20050224 |
In article <[EMAIL PROTECTED]>,
Carson Farmer <[EMAIL PROTECTED]> writes:
> date | user
> --+-
> 20050201 | Bill
> 20050210 | Steve
> 20050224 | Sally
> 20050311 | Martha
> 20050316 | Ryan
> 20050322 |
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