From: Josh Berkus <josh@agliodbs.com>
To: mallah@trade-india.com
To: pgsql-sql@postgresql.org
Subject: Re: Why is seq search preferred here by planner?
Date: Wed, 23 Apr 2003 10:00:20 -0700
Message-ID: <200304231000.20578.josh@agliodbs.com> (raw)
In-Reply-To: <1220.219.65.235.51.1051114881.squirrel@mail.trade-india.com>
References: <1220.219.65.235.51.1051114881.squirrel@mail.trade-india.com>
Mallah,
> UPDATE email_bank set country=personal_account_details.country where userid
> > 0 and userid=personal_account_details.userid ;
While Postgres is letting you "fudge", you are missing part of that SQL
statement. It should be:
UPDATE email_bank set country=personal_account_details.country
FROM personal_account_details
where userid > 0 and userid=personal_account_details.userid ;
> tradein_clients=# begin work;explain analyze UPDATE email_bank set
> country=personal_account_details.country where userid > 0 and
> userid=personal_account_details.userid ;BEGIN
> Time: 669.57 ms
Hmmm ... 669 ms seems pretty speedy for updating 150,000 rows. What's the
problem?
--
Josh Berkus
Aglio Database Solutions
San Francisco
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: josh@agliodbs.com, mallah@trade-india.com
Subject: Re: Why is seq search preferred here by planner?
In-Reply-To: <200304231000.20578.josh@agliodbs.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox