| From: | "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com> |
|---|---|
| To: | "Pavel Velikhov" <pvelikhov(at)yahoo(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: need help with a query |
| Date: | 2007-10-19 15:52:58 |
| Message-ID: | 36e682920710190852r91139d3ge07093f791477fa8@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-performance |
On 10/19/07, Pavel Velikhov <pvelikhov(at)yahoo(dot)com> wrote:
>
> Hi,
>
> I am updating a big table (90M records) with data from another rather
> large table (4M entries). Here is my update query:
>
> update links set target_size =
> ( select size from articles where articles.article_id =
> links.article_to)
try:
UPDATE links
SET target_size = size
FROM articles
WHERE articles.article_id = links.article_to;
--
Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
499 Thornall Street, 2nd Floor | jonah(dot)harris(at)enterprisedb(dot)com
Edison, NJ 08837 | http://www.enterprisedb.com/
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