Eureka! Thanks Paul and Blair - your examples and explanations make sense and were very helpful.
-Ross On Wed, Jun 17, 2009 at 8:11 PM, Paul Davis <[email protected]>wrote: > Blair has the right idea here. > > descending=true quite literally means "traverse the btree backwards" > and that is all. The side effect this has that catches a lot of people > is that "traverse the btree backwards" means you have to swap your > start and end keys because going backwards the logic is swapped. Or in > other words, "start" means "encountered first, given the current > traversal direction". > > HTH, > Paul Davis > > On Wed, Jun 17, 2009 at 8:04 PM, Blair Nilsson<[email protected]> > wrote: > > I shouldn't drink so much coffee before posting, some of that didn't > > make too much sense. > > > > take the keys > > ["a",1] > > ["a",2] > > ["a",3] > > ["b",1] > > ["b",3] > > ["b",5] > > > > startkey=["a"]&endkey=["b"] > > will give you all of the keys starting with ["a"] > > > > Any key after ["a",3] and before ["b",1] can be used. > > {} is after any number, string or array (I think), so is very useful > > to use as part of a key describing a range. > > > > startkey=["a"]&endkey=["a",{}] should give you anything under ["a"], > > since it is the range containing going form the first to last possible > > key for anything under ["a"] > > > > What that means when you use descending=true, you will need to start > > with ["a",{}] and end with ["a"] > > > > Hopefully, this will make more sense, and that I have will remember to > > read my posts before I post them :) > > > > Sorry for the hurried post before. > > > > --- Blair > > >
