Context: CREATE TABLE Ref_budget_codes (budget_type_code VARCHAR, budget_type_description VARCHAR); CREATE TABLE Documents_with_expenses (document_id VARCHAR, budget_type_code VARCHAR)
Question: Show the budget type code and description and the corresponding document id.
Answer: SELECT T2.budget_type_code, T2.budget_type_description, T1.document_id FROM Documents_with_expenses AS T1 JOIN Ref_budget_codes AS T2 ON T1.budget_type_code = T2.budget_type_code