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help / color / mirror / Atom feedFrom: Ron Johnson <[email protected]>
To: pgsql-general <[email protected]>
Subject: Re: UPDATE with multiple WHERE conditions
Date: Wed, 12 Jun 2024 17:48:26 -0400
Message-ID: <CANzqJaB48SjPZrOqEn-wawob+GfKQrwLouyNP_zoPW_5QsvFFw@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
On Wed, Jun 12, 2024 at 5:28 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.
>
> Is there a way to access a file with those condition values? If not, should
> I create a temporary table with one column containing those values, or do I
> write a psql script with 295 lines, one for each row to be updated?
>
A plain UPDATE might work.
UPDATE to_be_updated a
SET bool_col = true
FROM other_table b
WHERE a.pk = b.pk
AND b.field3 = mumble;
(You can join them, right?)
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Subject: Re: UPDATE with multiple WHERE conditions
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