Hello,
Here is my exp. regarding VIEW (create VIEW view_name AS SELECT )
optimization.
I have found strange (or at least not very intelligent) behavior of query
planner (v.7.3.4).
Given task is to take data from 14 tables, join, group, sort, etc. I
currently use about ten views referencing ea
On Thu, Aug 21, 2003 at 01:02:08PM -0400, Tom Lane wrote:
> Mathieu De Zutter <[EMAIL PROTECTED]> writes:
> > Apart from avoiding views or subselects when sorting afterwards and
> > putting the whole bunch in a huge SQL statement (which i'll have to
> > produce on-the-fly), do you have an other alt
> Apart from avoiding views or subselects when sorting afterwards and
> putting the whole bunch in a huge SQL statement (which i'll have to
> produce on-the-fly), do you have an other alternative?
> The 2 seconds is way to much, as the database will eventually run on a
> machine that is 10 times s
Mathieu De Zutter <[EMAIL PROTECTED]> writes:
> Apart from avoiding views or subselects when sorting afterwards and
> putting the whole bunch in a huge SQL statement (which i'll have to
> produce on-the-fly), do you have an other alternative?
See if you can avoid the subselects in the view's SELE
On Thu, Aug 21, 2003 at 10:59:11AM -0400, Tom Lane wrote:
> Mathieu De Zutter <[EMAIL PROTECTED]> writes:
> > However, i dont want the view to be presorted, but sort it in the
> > queries that use the view. When I do that, the index I have on that
> > field seems to be ignored. It stretches so far
Mathieu De Zutter <[EMAIL PROTECTED]> writes:
> However, i dont want the view to be presorted, but sort it in the
> queries that use the view. When I do that, the index I have on that
> field seems to be ignored. It stretches so far that, when I sort the
> view on A and sort the query on A too, the
Hi,
I'm having a performance problem in postgresql.
I have a rather complex view (attached) which, on itself, executes very
fast, as it should. Normally this view is unordered. When I order the
view itself (see comments in attachment), the view executes with about
the same speed since the field i
