Question

I have a table that displays 10 rows per page. Now, given an item’s ID, how can I get the “page” that the item is on?

In other words, I’m looking for the offset (multiple of 10) given an ID of a record.

SELECT * FROM items
WHERE category = "category"
LIMIT ?, 10      <----- TRYING TO FIGURE OUT HOW TO GET ? OFFSET GIVEN ID
ORDER BY id DESC

Answer 1

Try this:

SET @rownum = 0; 
Select sub.*, 10 * Floor(sub.rownum / 10) as pagenum
from
(
   Select *,  (@rownum:=@rownum+1) as rownum
   from items order by id desc
) sub
where sub.ID = givenID;