dimanche 16 novembre 2014

Mysql pagination without offset


Vote count:

0




Let's assume I have got a table with these data:


Table data


I want to order it by createdAt column DESC, and id column DESC



select id, createdAt from post order by createdAt desc, id desc


Now it looks like this:


ORDER BY createdAt DESC, id DESC


I want to paginate it with 2 items per page and don't want to use offset, just limit:



select id, createdAt from post order by createdAt desc, id desc limit 2


enter image description here


To get the next 2 items i use this query:



SELECT id, createdAt FROM post WHERE createdAt <= '2014-11-16 09:11:03' AND (id < '15' OR createdAt < '2014-11-16 09:11:03') ORDER BY createdAt DESC, id DESC LIMIT 2


enter image description here


I can go on like this. Get the last item's createdAt and id then use it for next page query.


But i'm trying to formulate the previous page query for almost two days and can't figure out a way yet.


Here is what i tried already:


Get the first item from current result (instead of last) use it's id and createdAt field and reverse the conditions in query (createdAt >=, id >, created at >). But this query always gives me the first two results (which is normal because the rows providing this conditions are the first two).


I'm already out of ideas. I need help. Thanks.



asked 1 min ago

cnkt

1,100






Mysql pagination without offset

Aucun commentaire:

Enregistrer un commentaire