Please calculate the total number of orders by each city in 2019.
total number of orders refers to COUNT(OrderNumber); 2019 refers to OrderDate between 01-01-2019 and 31-12-2019; city refers to City Name;
SELECT COUNT(T1.OrderNumber) FROM `Sales Orders` AS T1 INNER JOIN `Store Locations` AS T2 ON T2.StoreID = T1._StoreID WHERE T1.OrderDate LIKE '%/%/19' GROUP BY T2.`City Name` HAVING COUNT(T1.OrderNumber)