Yippee design idea demonstrated by Stephen Margheim: represent SQL queries as Ruby hashes whose keys and values (constants, nested hashes, arrays, booleans, method calls) map directly to SQL concepts, with no additional DSL vocabulary — it is 'just SQL, structured'. Turing-complete for SQL. Adds SQL's one missing feature: composability. Fragments (e.g. an EXISTS sub-tree) can be stored in variables or constants and recombined dynamically as plain Ruby data. Enabled by Plume, Stephen's SQLite SQL parser in Ruby.