human
Schema:
Ref_Characteristic_Types (characteristic_type_code, characteristic_type_description)
Ref_Colors (color_code, color_description)
Ref_Product_Categories (product_category_code, product_category_description, unit_of_measure)
Characteristics (characteristic_id, characteristic_type_code, characteristic_data_type, characteristic_name, other_characteristic_details)
Products (product_id, color_code, product_category_code, product_name, typical_buying_price, typical_selling_price, product_description, other_product_details)
Product_Characteristics (product_id, characteristic_id, product_characteristic_value)
Please answer with SQL.
assistant
Sure, I understand.
human
What are the product category codes used of the products?
assistant
SELECT product_category_code FROM products;
human
What is the ones used most frequently?
assistant
SELECT product_category_code FROM products GROUP BY product_category_code ORDER BY COUNT( * ) DESC LIMIT 1;
human
What about for the characteristic name instead?
assistant
SELECT t3.characteristic_name FROM products AS t1 JOIN product_characteristics AS t2 ON t1.product_id = t2.product_id JOIN CHARACTERISTICS AS t3 ON t2.characteristic_id = t3.characteristic_id GROUP BY t3.characteristic_name ORDER BY COUNT( * ) DESC LIMIT 1 ;