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From: Alvaro Herrera <[email protected]>
To: David G. Johnston <[email protected]>
Cc: Rich Shepard <[email protected]>
Cc: [email protected]
Subject: Re: UPDATE with multiple WHERE conditions
Date: Thu, 13 Jun 2024 12:34:25 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAKFQuwbzJwRLWVdLBKN4wyvAEmw+RzkRMXaMPrUHx0aZbRAU=w@mail.gmail.com>

On 2024-Jun-12, David G. Johnston wrote:

> On Wed, Jun 12, 2024 at 2:28 PM Rich Shepard <[email protected]>
> wrote:
> 
> > I have a table with 3492 rows. I want to update a boolean column from
> > 'false' to 'true' for 295 rows based on the value of another column.
> 
> I'll often just use a spreadsheet to build the 295 update commands and
> copy-paste them into psql or whatnot.

A closely related technique: if you have a query that generates the
UPDATE commands you need, you can run it under \gexec in psql, and
they'll be executed.

-- 
Álvaro Herrera               48°01'N 7°57'E  —  https://www.EnterpriseDB.com/
Al principio era UNIX, y UNIX habló y dijo: "Hello world\n".
No dijo "Hello New Jersey\n", ni "Hello USA\n".

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