Question

我有下面的SQL代码，

SELECT s.[CusNo] Supp, 
    RTRIM(CAST(s.[Customer] AS VARCHAR(50))) AS Name,
    s.[ConNo] Con, 
    RTRIM(CAST(s.[ConN] AS VARCHAR(50))) AS ConN,       
    sum(case when s.Date between convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) - 1) and convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) + 5) 
             then s.SELL else 0 end) ActualSales
FROM [dbo].[Reports] s
WHERE s.BOX = 2
AND   s.SELL <> 0
GROUP BY s.[CusNo], s.[Customer], s.ConNo, s.ConN

执行上述查询时，我在ActualSales列中获取了所有值（包括0个值）。

如何删除值为0的行？

Answer 1

使用having子句

SELECT s.[CusNo] Supp, 
RTRIM(CAST(s.[Customer] AS VARCHAR(50)) ) AS Name,
s.[ConNo] Con, 
RTRIM(CAST(s.[ConN] AS VARCHAR(50)) ) AS ConN,
sum(case when s.Date between convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) - 1) and convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) + 5) 
           then s.SELL else 0 end) ActualSales

FROM [dbo].[Reports] s
WHERE s.BOX = 2 and s.SELL <> 0
GROUP BY s.[CusNo], s.[Customer], s.ConNo, s.ConN
having sum(case when s.Date between convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) - 1) and convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) + 5) 
           then s.SELL else 0 end)<>0

或者您可以使用子查询

select * from
(
    SELECT s.[CusNo] Supp, 
    RTRIM(CAST(s.[Customer] AS VARCHAR(50)) ) AS Name,
     s.[ConNo] Con, 
    RTRIM(CAST(s.[ConN] AS VARCHAR(50)) ) AS ConN,
    sum(case when s.Date between convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) - 1) and convert(date,dateadd(wk, datediff(wk, 0, getdate()) - 1, 0) + 5) 
           then s.SELL else 0 end) ActualSales

FROM [dbo].[Reports] s
WHERE s.BOX = 2 and s.SELL <> 0
GROUP BY s.[CusNo], s.[Customer], s.ConNo, s.ConN
)A where ActualSales<>0

Answer 2

我认为您可以通过将case条件移到where子句来获得所需的内容：

SELECT s.[CusNo] as Supp, 
       RTRIM(CAST(s.[Customer] AS VARCHAR(50)) ) AS Name,
       s.[ConNo] as Con, 
       RTRIM(CAST(s.[ConN] AS VARCHAR(50)) ) AS ConN,
       SUM(s.SELL) as ActualSales
FROM [dbo].[Reports] s
WHERE s.BOX = 2 AND s.SELL <> 0 AND
      s.Date BETWEEN convert(date, dateadd(wk, datediff(week, 0, getdate()) - 1, 0) - 1) and
                     convert(date,dateadd(wk, datediff(week, 0, getdate()) - 1, 0) + 5)
GROUP BY s.[CusNo], s.[Customer], s.ConNo, s.ConN;

ActualSales可能仍然是0（如果Sales可能为负。在这种情况下，您需要一个HAVING子句：{{1} }。

由于此方法会在聚合之前进行过滤，因此也可能会提高性能。

SQL排除NULL或值0

2 个答案: