Question: State all the order numbers for sales team of Samuel Fowler.
SQL: SELECT T FROM ( SELECT DISTINCT CASE  WHEN T2.`Sales Team` = 'Samuel Fowler' THEN T1.OrderNumber ELSE NULL END AS T FROM `Sales Orders` T1 INNER JOIN `Sales Team` T2 ON T2.SalesTeamID = T1._SalesTeamID ) WHERE T IS NOT NULL