Listing 6.14[em]Using Aggregate Functions To Provide Summary Information
SELECT Min(SL.Quantity * RT.Retail) AS Minsls,  _
     Max(SL.Quantity * RT.Retail) AS Maxsls,  _
     Avg(SL.Quantity * RT.Retail) AS Avgsls,  _
     Sum(SL.Quantity * RT.Retail) AS Totsls,  _
     Sum(SL.Quantity) AS Totvol  _
     FROM Sales AS SL, [Retail Items] AS RT  _
     WHERE SL.[Item Code]=RT.[Item Code]