SQL總和，返回字段不是零

Question

我寫了一個查詢來獲得三個字段的總和，除了大多數總和爲零。我只需要返回大於零的總和。下面是查詢

SELECT [Product], 
SUM([Pounds]) as SumPounds, 
SUM([Dollars]) as SumDollars, 
SUM([EBITDA]) as SumEBITDA 
FROM MyTable 
WHERE ([Year] = '2017' AND [Date] <= #8/20/2017#) 
SORT BY [Product]; 

有沒有辦法只返回大於零的總和在Access？

Answer 1

SELECT [Product], 
     SUM([Pounds]) as SumPounds, 
     SUM([Dollars]) as SumDollars, 
     SUM([EBITDA]) as SumEBITDA 
FROM MyTable 
WHERE ([Year] = '2017' AND [Date] <= #8/20/2017#) 
GROUP BY [Product] 
HAVING SUM([Pounds]) + SUM([Dollars]) + SUM([EBITDA]) > 0 

Answer 2

可以使用具有過濾器的聚合函數的結果

SELECT [Product], 
SUM([Pounds]) as SumPounds, 
SUM([Dollars]) as SumDollars, 
SUM([EBITDA]) as SumEBITDA 
FROM MyTable 
WHERE ([Year] = '2017' AND [Date] <= #8/20/2017#) 
HAVING UM([Pounds]) >0 AND SUM([Dollars]) > 0 AND SUM([EBITDA]) >0 
SORT BY [Product]; 

，如果你需要的所有3值以上，如果你只需要一個，你可以使用或

可以使用並作爲答案