On Wed, Jun 12, 2024 at 5:28 PM Rich Shepard <rshepard(at)appl-ecosys(dot)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?)