explain analyze SELECT audit , store , question , month ,
year , week , weekday , myaudittotalscore , active , auditnum , answer ,
quarter , y_n , region , district , audittype , status , keyedby , questiondisplay
, qtext , qdescr , answerdisplay , answertext , customauditnum , dateaudittak
Sorry I tried a few times to break this email up (guess
there must be a size limit?).
Any one interested in seeing the explain for the speed of
many group by’s question just email me.
Basically the sql is built by a dynamic cube product from
data dynamics.
I can edit it prior to it ru
On Thu, May 19, 2005 at 09:31:47AM -0700, Josh Berkus wrote:
> > In the
> > case of testing index scans, we need to be able to vary correlation,
> > which so far I've been doing by ordering by different columns. I suspect
> > it will also be important to test with different tuple sizes. There's
> >
"Jim C. Nasby" <[EMAIL PROTECTED]> writes:
> On Thu, May 19, 2005 at 09:31:47AM -0700, Josh Berkus wrote:
>> can test our formula for accuracy and precision. However, such a formula
>> *does* need to take into account concurrent activity, updates, etc ... that
>> is, it needs to approximately es
On Fri, May 20, 2005 at 04:47:38PM -0400, Tom Lane wrote:
> "Jim C. Nasby" <[EMAIL PROTECTED]> writes:
> > On Thu, May 19, 2005 at 09:31:47AM -0700, Josh Berkus wrote:
> >> can test our formula for accuracy and precision. However, such a formula
> >> *does* need to take into account concurrent ac
On Fri, May 20, 2005 at 03:23:16PM -0700, Josh Berkus wrote:
> Jim,
>
> > Well, that raises an interesting issue, because AFAIK none of the cost
> > estimate functions currently do that. Heck, AFAIK even the piggyback
> > seqscan code doesn't take other seqscans into account.
>
> Sure. But you'
"Jim C. Nasby" <[EMAIL PROTECTED]> writes:
> Does this sound like a reasonable approach? Also, how important do
> people think it is to use explain analyze output instead of just doing
> SELECT count(*) FROM (query you actually want to test)? (The select
> count(*) wrapper is just a means to throw
