Funso (Chichewa): Ndi boma liti lomwe linalemba mitengo ya chimanga m'misika yochepa kwambiri?
Question (English): Which district recorded maize prices in the fewest number of markets?
Table: commodity_prices (difficulty: medium)
SQL: SELECT district, COUNT(DISTINCT market) FROM commodity_prices WHERE commodity = 'Maize' GROUP BY district ORDER BY COUNT(DISTINCT market) ASC LIMIT 1;
Result: [('Balaka', 1)]