Re: Performance Killer 'IN' ?
| От | Joshua D. Drake |
|---|---|
| Тема | Re: Performance Killer 'IN' ? |
| Дата | |
| Msg-id | 442C4EBC.5040808@commandprompt.com обсуждение исходный текст |
| Ответ на | Re: Performance Killer 'IN' ? (Kai Hessing <kai.hessing@hobsons.de>) |
| Ответы |
Re: Performance Killer 'IN' ?
|
| Список | pgsql-general |
Kai Hessing wrote:
>> and it took about 10 Minutes to execute. So it is nearly a hundred times
>> slower. Can this be verified? Is there anything that can be done about
>> that? Else I would need to have a few words with our programmers...
>
> OK... I overstated a little bit. The real numbers are:
>
> 1.) 21.5 seconds
> 2.) 363.7 seconds
>
> But it is still a significant difference.
Can you provide an explain analyze of each query?
>
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