boost.multiindex is close to what you want. You define your table schema (as a struct definition) then ask for indices (of various kinds) on specific subsets of

boost.multiindex is close to what you want. You define your table schema (as a struct definition) then ask for indices (of various kinds) on specific subsets of your schema. IIRC It doesn't support anything other than row major layout, but an extension to it is not too far fetched. I dream of a language with first class support for relational tables as the primary data structure.