Funso (Chichewa): Ndi zokolola ziti zomwe zili ndi mitengo yolembedwa pa masiku ochepa kwambiri?
Question (English): Which commodity has prices recorded on the fewest collection dates?
Table: commodity_prices (difficulty: medium)
SQL: SELECT commodity, COUNT(DISTINCT collection_date) FROM commodity_prices GROUP BY commodity ORDER BY COUNT(DISTINCT collection_date) ASC LIMIT 1;
Result: [('Beans', 5)]