you cant do it like that. you need to do it in two stepsSELECT ..., Product_Revenue,Projected_Revenue--Add Product Revenue and Projected Revenue to arive at Projected Sales , Product_Revenue + Projected_Revenue AS 'Product_Sales' FROM(SELECT *--Weighted Avarage of Projected Sales, CAST(Probability AS FLOAT) / 100 * Product_Revenue AS 'Projected_Revenue'...FROM......)t
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