Back to Basics, Back to SQL

Refactoring mostly focused on the SQL backend as described in the mailing list post. This will become 1.1.

Objective: narrow focus back to the SQL backend and query generator. Make the core more understandable and maintainable.

In progress as sqlrefactor.

Main features:

• SQL refactoring – simplification of the SQL generator, decoupling of tightly tied components (#266, #253)
• Expressions (#231) – attributes can be derived from other attributes and aggregates can be defined using an arithmetic expression instead of just a function

Nice to have:

– PostgreSQL JSON objects (#263)