Which product has the highest net profit in 2019?
net profit can be computed as SUBTRACT(Unit Price, Unit Cost); the highest net profit in 2019 refers to MAX(Net Profit) where OrderDate LIKE '%/19'; product refers to Product Name;
SELECT T2.`Product Name` FROM `Sales Orders` AS T1 INNER JOIN Products AS T2 ON T2.ProductID = T1._ProductID WHERE T1.OrderDate LIKE '%/%/19' ORDER BY REPLACE(T1.`Unit Price`, ',', '') - REPLACE(T1.`Unit Cost`, ',', '') DESC LIMIT 1