On 05/23/2013 05:21 PM, Jonathan Morra wrote:
Sorry for the messy query, I'm very new to writing these complex
queries. I'll try and make it easier to read by using WITH clauses.
However, just to clarify, the WITH clauses only increase readability
and not performance in any way, right?
It d
I have been working on this query, and I was able to modify it and get it's
run time cut in half. Here's where it is right now:
SELECT first_name, last_name, serial_number, latest_read, value,
lifetime_value, lifetime.patient_id
FROM (
SELECT DISTINCT patient_id, first_name, last_name, MAX(read_d
On Mon, May 27, 2013 at 11:02 AM, John Mudd wrote:
> Postgres 9.1.2 on Ubuntu 12.04
>
> Any reason why a select by primary key would be slower than a select that
> includes an ORDER BY? I was really hoping using the primary key would give
> me a boost.
>
> I stopped the server and cleared the O/S
John,
And can you please include BUFFERS to ANALYZE?
Regards,
Roman Konoval
On Tue, May 28, 2013 at 9:48 AM, Evgeniy Shishkin wrote:
>
>
>
>
> On 28.05.2013, at 2:17, John Mudd wrote:
>
> Thanks again.
>
> Well, I have two problems with using the CLUSTER option. It's only
> temporary since an
