----- Original Message ----- > From: "Akshay Suryavanshi" <akshay.suryavansh...@gmail.com>
> I was referring to a condition when there is no index on the tables, > not even primary keys. If you have a lot of data in there, may I suggest you (temporarily) add a unique index and benchmark both methods? As I said, limit n,m is the last operation that gets executed, so it requires rows 0-n to be fetched, too. On deep pages that can be quite a lot of data needlessly fetched. You might find that the expense of maintaining that index may be well worth the speedup when fetching pages. > Your explanation makes complete sense about the optimizer and the > pagination queries. > Thanks, You're welcome. -- Unhappiness is discouraged and will be corrected with kitten pictures.
