[英]Convert Crystal Report Expression to SQL Query
How can I change the below Crystal Report Expression to SQL Server Query Case Statement ? 如何将下面的Crystal Report表达式更改为SQL Server查询案例语句? Any help appreciated. 任何帮助表示赞赏。
AvgLbsPerWeek AvgLbsPerWeek
If {@EnoughWeightsSum} < {@FreqForCalcs} then
(AvgLbsPerWeek := AvgLbsPerWeek +0;
0;)
else If {@EnoughWeightsSum} >= {@FreqForCalcs} then
(AvgLbsPerWeek := AvgLbsPerWeek +{@AvgByDaySum}/{@EnoughWeightsSum}*{@FreqForCalcs};
{@AvgByDaySum}/{@EnoughWeightsSum}*{@FreqForCalcs};)
This is a simple CASE statement 这是一个简单的CASE语句
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
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