Hi,
-- Eric <emayo@pozicom.net> wrote:
> If I perform the following 2 selects, the first one is EXTREMELY slow
> where the 2nd one is very fast.
[...]
> Why would 2 be so much faster? I have ran the EXPLAIN on this and index
> scans are being used.
I guess, the first query has to search for all ol.orderid the equivalent
o.orderid; the second variant only has to search for '1234' in each
?.orderid, which is much faster.
Explizit joins should speed up this!
> NOTE: The actual queries return more information than this, but the
> fundamental change shown above seems to give me the instant response I am
> looking for. (1) takes about 60 seconds to run and (2) takes 3-5 seconds
> to run.
3-5 seconds seems very long to me, if indexes are used and the result is
not a set of thousands of rows; are you sure?
Ciao Alvar
--
// Unterschreiben! http://www.odem.org/informationsfreiheit/
// Internet am Telefon: http://www.teletrust.info/
// Das freieste Medium? http://www.odem.org/insert_coin/
// Blaster: http://www.assoziations-blaster.de/
