Question

I am trying to update multiple rows on one table using MySQL. I have found that this is possible but I am trying to increment the value of the comments column by a given amount, however trying to increment it by 1 actually increments it by 3.

$increment = 1;
('UPDATE articles
SET comments = CASE
WHEN article_id in(1, 2) THEN comments + ' . $increment . '
END');

Any ideas?
Thanks,
Matt

Answer 1

Try this:

$query = "UPDATE articles SET comments = comments + " . $increment . " WHERE article_id IN (1, 2)";