Is it possible in 0.7.x to have indexes on heterogeneous rows, which have different sets of columns?
For example, let's say you have three types of objects (1, 2, 3) which each had three members. If your rows had the following pattern type=1 a=? b=? c=? type=2 d=? e=? f=? type=3 g=? h=? i=? could you index "type" as your primary index, and also index "a", "e", "h" as secondary indexes, to get the objects of that type that you are looking for? Would it work if you had billions of rows of each type?
