Funso (Chichewa): Ndi msika uti womwe uli ndi kusiyana kochepa kwambiri kwa mtengo wa mpunga?
Question (English): Which market has the smallest variation in rice prices?
Table: commodity_prices (difficulty: medium)
SQL: SELECT market, (MAX(price) - MIN(price)) FROM commodity_prices WHERE commodity = 'Rice' GROUP BY market ORDER BY (MAX(price) - MIN(price)) ASC LIMIT 1;
Result: [('Bangula', 0.0)]