| From: | bricklen <bricklen(at)gmail(dot)com> |
|---|---|
| To: | Haiming Zhang <Haiming(dot)Zhang(at)redflex(dot)com(dot)au> |
| Cc: | "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Update big table |
| Date: | 2013-07-15 14:37:10 |
| Message-ID: | CAGrpgQ_hAmRSaNYwi_oU9kN9A-6=xBjksy6TQmv+7DAAhNLDow@mail.gmail.com |
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| Lists: | pgsql-general |
On Mon, Jul 15, 2013 at 6:08 AM, Haiming Zhang <Haiming(dot)Zhang(at)redflex(dot)com(dot)au
> wrote:
> I run my query using JOIN for two hours, and did not get it done. Here is
> my query:
>
> update table1 set col1 = true from table2 where table1.event_id =
> table2.event_id
>
Did you already post the query plan from "EXPLAIN update table1 set col1 =
true from table2 where table1.event_id = table2.event_id" ?
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