Database: regional_sales
Question: Please list the customer names whose order quantity was more than 5 on 6/1/2018.
SQL: SELECT T FROM ( SELECT DISTINCT CASE  WHEN SUM(T1.`Order Quantity`) > 5 THEN T2.`Customer Names` END AS T FROM `Sales Orders` T1 INNER JOIN Customers T2 ON T2.CustomerID = T1._CustomerID WHERE T1.OrderDate = '6/1/18' GROUP BY T1._CustomerID ) WHERE T IS NOT NULL