Question

The following query gets all the results from a table called video

SELECT video.* from video 
LEFT JOIN conv_progress on video.vid_id=conv_progress.vid_id 
LEFT JOIN upload_progress on video.vid_id=upload_progress.vid_id 
where conv_progress.vid_id is null
AND upload_progress.vid_id is null
ORDER BY video.timestamp DESC LIMIT ?, ?

I just want to count the total results for pagination usage. The current limit ?,? reduces my count if I use rowCount().

SELECT video.*, COUNT(vid_id) as count from video 
LEFT JOIN conv_progress on video.vid_id=conv_progress.vid_id 
LEFT JOIN upload_progress on video.vid_id=upload_progress.vid_id 
where conv_progress.vid_id is null
AND upload_progress.vid_id is null
ORDER BY video.timestamp DESC LIMIT ?, ?',$variables

This query only returns one result but a proper count number. Anyone know how I can fix this?

Answer 1

MySQL has a sql_calc_found_rows extensions, which forces the DB engine to calculate how many rows WOULD have been retrieve if it wasn’t for the limit statement. You can then retrieve this full-row-count with [SELECT found_rows()][1] in a separate query.

Basic syntax for the parent query would be:

SELECT sql_calc_found_rows video.*  FROM video
...
LIMIT ?,?