On 6/12/24 15:48, Ron Johnson wrote:
On Wed, Jun 12, 2024 at 5:28 PM Rich Shepard
<rshep...@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 <http://a.pk> = b.pk <http://b.pk>
AND b.field3 = mumble;
(You can join them, right?)
Add "begin;" to that and try it. If you don't get exactly UPDATE 295
reported, then "rollback;";
