Crystal Report式をSQLクエリに変換する

Question

以下のCrystal Report式をSQL Serverクエリステートメントに変更するにはどうすればよいですか？どんな助けもありがたい。

AvgLbsPerWeek

If {@EnoughWeightsSum} < {@FreqForCalcs} then 
    (AvgLbsPerWeek := AvgLbsPerWeek +0; 
     0;) 
else If {@EnoughWeightsSum} >= {@FreqForCalcs} then 
    (AvgLbsPerWeek := AvgLbsPerWeek +{@AvgByDaySum}/{@EnoughWeightsSum}*{@FreqForCalcs}; 
     {@AvgByDaySum}/{@EnoughWeightsSum}*{@FreqForCalcs};) 

Answer 1

これは単純なCASE文

SELECT 
    AvgLbsPerWeek = 
    CASE WHEN @EnoughWeightSum < @FreqForCalcs 
     THEN AvgPoundsPerWeek 
    ELSE 
     AvgPoundsPerWeek + @AvgByDaySum/(@EnoughWeightSum*FreqForCalcs) 
      -- I didn't quite understand how the last code fit in 
    END 
FROM Table