Re: [PERFORM] Hints proposal
От | Zeugswetter Andreas ADI SD |
---|---|
Тема | Re: [PERFORM] Hints proposal |
Дата | |
Msg-id | E1539E0ED7043848906A8FF995BDA579016A0981@m0143.s-mxs.net обсуждение исходный текст |
Ответ на | Re: [PERFORM] Hints proposal (Andrew Sullivan <ajs@crankycanuck.ca>) |
Ответы |
Re: [PERFORM] Hints proposal
|
Список | pgsql-hackers |
> The _other_ way it's going to be used is as a stealthy > alteration to regular behaviour, to solve a particular nasty > performance problem that happens to result on a given day. > And every single time I've seen anything like that done, the > long term effect is always monstrous. Funny, I very seldom use Informix hints (mostly none, maybe 2 per project), but I have yet to see one that backfires on me, even lightly. I use hints like: don't use that index, use that join order, use that index Can you give us an example that had such a monstrous effect in Oracle, other than that the hint was a mistake in the first place ? Andreas
В списке pgsql-hackers по дате отправления: