Hi,
Daevid Vincent wrote:
Is there a way to know how many rows were used in a computation?
I tried this 'trick' but I still get 1, when I know that there are 3 rows
used...
SELECT SQL_CALC_FOUND_ROWS
MAX(DATE_ADD('2007-10-18 18:04:45', INTERVAL user_access_hours
HOUR)),
MAX(access_expire)
FROM
end_user_groups
JOIN end_user_group_links ON gid = id
WHERE
enabled = 1 AND uid = 16;
You can use COUNT(*). FOUND_ROWS() works a little differently, as you
know -- it lets you know how many rows would have been returned without
a LIMIT. But this query has no LIMIT of course.
select FOUND_ROWS();
<http://dev.mysql.com/doc/refman/5.0/en/select.html>
<http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_
found-rows>
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