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Re: UPDATE with multiple WHERE conditions - Mailing list pgsql-general

From Ron Johnson
Subject Re: UPDATE with multiple WHERE conditions
Date
Msg-id CANzqJaB48SjPZrOqEn-wawob+GfKQrwLouyNP_zoPW_5QsvFFw@mail.gmail.com
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In response to UPDATE with multiple WHERE conditions  (Rich Shepard <rshepard@appl-ecosys.com>)
Responses Re: UPDATE with multiple WHERE conditions
Re: UPDATE with multiple WHERE conditions
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On Wed, Jun 12, 2024 at 5:28 PM Rich Shepard <rshepard@appl-ecosys.com> 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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