Question : SQL code conversion for Microsoft Access 2007

Hello: I need help to convert the standard SQL code below for a MS Access 2007 database.  Thank you!

SELECT
f.Volume_in_Eaches -
decode(f.Prod_Code, c.Cannibal_Prod1_Code, Cannibal_Prod1_Vol_Ea, 0) -
decode(f.Prod_Code, c.Cannibal_Prod2_Code, Cannibal_Prod2_Vol_Ea, 0) -
decode(f.Prod_Code, c.Cannibal_Prod3_Code, Cannibal_Prod3_Vol_Ea, 0) -
decode(f.Prod_Code, c.Cannibal_Prod4_Code, Cannibal_Prod4_Vol_Ea, 0) -
decode(f.Prod_Code, c.Cannibal_Prod5_Code, Cannibal_Prod5_Vol_Ea, 0) as NetVolume
FROM
tblForecast f
left outer join tblCannibal c
on
f.Prod_Year = c.Prod_Year and
f.Proc_Code = c.Prod_Code and
f.Reg_Code = c.Reg_Code;

Answer : SQL code conversion for Microsoft Access 2007

Decode is similar to IIF:

IIF(Expression to evaluate, Truepart, Falsepart)

You can also nest IIFs:

IIF("Something", DoThis, IIF("Somethingelse", Dothis, Elsedo this))