> On Oct 30, 2014, at 6:30 PM, peng liu <[email protected]> wrote: > > i know this. but i really need do like this. if i query first key and query > second key ,and then filter the results to my final result. it will so slowly > if my data large. so ,may be the couch base can not do like this .because i > query some like this (query (A > x and B = y ) or C < w)) often. so only sql > may be do this better that i think.
A SQL database will do exactly the same thing with a query like that — it'll run two or more index lookups, collect the results in memory, and then merge them. The query planner is hiding the details from you, so it looks simple. > But sql will be sync by myself between android and iOS or wp.. the data will > be large. this is the only reason that i use couch base. Data size isn't the only issue. Sync is really hard to do right. Trust me, I've been working on it for three years, and I already had a successful design (CouchDB) to copy :) —Jens -- You received this message because you are subscribed to the Google Groups "Couchbase Mobile" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/mobile-couchbase/6872B0C1-1320-4736-AD0E-2D1CFDCAD21B%40couchbase.com. For more options, visit https://groups.google.com/d/optout.
