Re: [GENERAL] Simple Query not using Primary Key Index
| От | Aron Podrigal |
|---|---|
| Тема | Re: [GENERAL] Simple Query not using Primary Key Index |
| Дата | |
| Msg-id | CANJp-yjk1xLdZrT58=TPBsmfdT9jumaxdRF0wYhcx-xm8BUBzQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: [GENERAL] Simple Query not using Primary Key Index (Alban Hertroys <haramrae@gmail.com>) |
| Ответы |
Re: [GENERAL] Simple Query not using Primary Key Index
|
| Список | pgsql-general |
EXPLAIN ANALYZE does not tell me much. It doesn't say why the planner opts for not using the Primary key index.
On Mon, Feb 6, 2017, 6:23 PM Alban Hertroys <haramrae@gmail.com> wrote:
> On 7 Feb 2017, at 0:16, Podrigal, Aron <aronp@guaranteedplus.com> wrote:
>
> Hi,
>
> I noticed when I do a simple SELECT id FROM mytable WHERE id = 'cb81d070-4213-465f-b32e-b8db43b83a25'::UUID Postgres does not use the primary key index and opts for a Seq Scan.
>
> I of course did VACUUM ANALYZE and I have reset statistics But no sign. Is there any particular thing I should be looking at?
An EXPLAIN ANALYZE would be a good start.
Alban Hertroys
--
If you can't see the forest for the trees,
cut the trees and you'll find there is no forest.
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