| From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | Abandoned <besturk(at)gmail(dot)com> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Select too many ids.. |
| Date: | 2007-10-02 16:31:28 |
| Message-ID: | dcc563d10710020931h55236a58wb8068cca8fa7a7fe@mail.gmail.com |
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| Lists: | pgsql-general |
On 10/1/07, Abandoned <besturk(at)gmail(dot)com> wrote:
> Hi..
> I have a id list and id list have 2 million dinamic elements..
> I want to select what id have point..
> I try:
>
> SELECT id, point FROM table WHERE id in (IDLIST)
>
> This is working but too slowly and i need to performance..
>
> I'm sorry my bad english.
> King regards..
Try adding another bit of where clause:
SELECT id, point FROM table WHERE id in (IDLIST) and point is not null
it may be faster with a partial index " on table(id) where point is
null " or something like that.
What does explain / explain analyze say about the query?
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