How can I join these 2 queries based on Customer_No so it only returns a dataset for customers that have data for both 2008 and 2009? I can't seem to get the syntacx right...Select Client.Company,Client.City,YEAR(BOF_Date) AS Year, MONTH(BOF_Date) AS Month, SUM(Actual_WT) AS Actual_WT,SUM(LF_WT_Target) AS Target_WT, MIN(BOF_Date) AS Min_Date,MAX(BOF_Date) AS Max_DateFROM WashRunINNER JOIN CLIENT on Client.Customer_No = WashRun.Customer_NoWHERE (BOF_Date BETWEEN '1/1/09' AND '3/1/09') GROUP BY Client.Company,Client.City,YEAR(BOF_Date),MONTH(BOF_Date)Select Client.Company,Client.City,YEAR(BOF_Date) AS Year, MONTH(BOF_Date) AS Month, SUM(Actual_WT) AS Actual_WT,SUM(LF_WT_Target) AS Target_WT, MIN(BOF_Date) AS Min_Date,MAX(BOF_Date) AS Max_DateFROM WashRunINNER JOIN CLIENT on Client.Customer_No = WashRun.Customer_NoWHERE (BOF_Date BETWEEN '1/1/08' AND '3/1/08') GROUP BY Client.Company,Client.City,YEAR(BOF_Date),MONTH(BOF_Date)