Before accepting an AI-assisted CSV query: - Define one row: order, line item, payment, or something else? - Inspect columns/types and permitted statuses. Avoid sharing sensitive schema. - State exact date window, currency and amount definition. - Inspect a proposed query as executable code, not just explanatory prose. - Check filters, joins, grouping, duplicate/null handling and ordering. - Use a small fictional fixture and calculate its answer independently. - Keep the input, reviewed SQL, result, assumptions and tool version together. - Treat local execution and virtualenvs as separate from actual sandboxing. - Revalidate when data, rules or the query change. No universal accuracy claim.