Re: Fast key range iteration
On Mon, May 4, 2015 at 9:31 PM, Александр Киранов <xhaskx(a)gmail.com> wrote:
Is there a way to iterate with all key-value pairs in LMDB database,
where
all keys is in specified range?
I'm trying to use mdb_cursor_get() with MDB_SET_RANGE to search first pair.
Then I see only one way - use mdb_cursor_get() with MDB_NEXT and compare key
by memcmp().
But it seems absolutely not effective.
Is there another solution for my task?
Instead of memcmp(), you'd probably want to use mdb_cmp() for the key
comparison:
http://symas.com/mdb/doc/group__mdb.html#gaba790a2493f744965b810efac73bac0e
--
Arto Bendiken | @bendiken | http://ar.to