On Fri, May 23, 2008 at 2:07 PM, Craig Ringer
<craig@postnewspapers.com.au> wrote:
> Can it be done? Or is the DB server not capable of generating explain output
> (say to a log) and also returning a resultset?
It can be done ~kind-of~.
To me EXPLAIN [ ANALYSE ] is similar to any other SELECT statement
query, with the exception that the data-set that it returns to the
client is an order list of execution steps.
So, if a client front-end were to pass an explain analyze query to the
server, the server would return the data-set for the execution plan.
The trick here is to find a way to get a client interface to prefix
its select statements with explain analyze. And this, I don't thing
can be done. That's why you have to manually view the server logs to
see what query are being passed so that identify the problem queries
your self.
--
Regards,
Richard Broersma Jr.
Visit the Los Angles PostgreSQL Users Group (LAPUG)
http://pugs.postgresql.org/lapug