Question

I want to do a MySQL Query which selects a given number of Rows from a single table from a given offset like

SELECT * FROM table 
WHERE timestamp < '2011-11-04 09:01:05' 
ORDER BY timestamp DESC 
LIMIT 100

My problem is that i always want all rows within a day if one row of a day will be included in the result.
It would be no problem to have a result with e.g. 102 rows instead of 100

Can i realize this with a single SQL statement?

Thanks for your help!

Answer 1

This seems to work on my system:

SELECT UserID, Created
FROM some_user
WHERE Created < '2011-11-04 09:10:11'
AND Created >= (
    SELECT DATE(Created) -- note: DATE() strips out the time portion from datetime
    FROM some_user
    WHERE Created < '2011-11-04 09:10:11'
    ORDER BY Created DESC
    LIMIT 99, 1 -- note: counting starts from 0 so LIMIT 99, 1 returns 100th row
)
ORDER BY Created DESC
-- 0 rows affected, 102 rows found. Duration for 1 query: 0.047 sec.

There might be a faster alternative.