That's for the querying part, but how did you deal with indexing ? If if understand right, you seem to precompute pretty much everything you need on the fly, so

That's for the querying part, but how did you deal with indexing ? If if understand right, you seem to precompute pretty much everything you need on the fly, so I guess that means custom data structure not relying on SQL algebra, so no pkey / fkey table like and index that would let you write new queries after you've stored the data ?