Question : How do I calculate if stements in SQL

How do I calculate if statements in SQL


Eg

IF(SUM(CommGross) AS SumOfCommGross>12499 Then (SumOfCommGross*7.5%) As BaseCommission
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SELECT DISTINCT 
                      SUM(CommGross) AS SumOfCommGross, AVG(CommGross) AS AvgOfCommGross, COUNT(*) AS CountOfCompletionsListCurrentMonth, 
                      SUM(CommGross / 20) AS Commission, SalesUserName
FROM         dbo.vwCompletions_List_Current_Month
WHERE     (SalesTeamID = 1) AND (SalesCurrentlyEmployed = 1)
GROUP BY SalesUserName
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Answer : How do I calculate if stements in SQL

Use a CASE statement, something like this:
(I've added an outer SELECT for simplicity)
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select *,
case when SumOfCommGross > 12499 Then SumOfCommGross*.075
else 0 end As BaseCommission
from
(
SELECT DISTINCT 


                      SUM(CommGross) AS SumOfCommGross, AVG(CommGross) AS AvgOfCommGross, COUNT(*) AS CountOfCompletionsListCurrentMonth, 
                      SUM(CommGross / 20) AS Commission, SalesUserName
FROM         dbo.vwCompletions_List_Current_Month
WHERE     (SalesTeamID = 1) AND (SalesCurrentlyEmployed = 1)
GROUP BY SalesUserName
) salesdata
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