Database: products_gen_characteristics
Question: Find the unit of measurement and product category code of product named "chervil".
SQL:
SELECT t2.unit_of_measure ,  t2.product_category_code FROM products AS t1 JOIN ref_product_categories AS t2 ON t1.product_category_code  =  t2.product_category_code WHERE t1.product_name  =  "chervil"