Question

我无法加载该表。我希望所有<500的数量值加总，其中NameCode相同。如果总和仍然小于500，请不要插入。这可能吗？

CREATE TABLE [dbo].[GovQuantity](
        [NameCode] [varchar](40) NULL,
        [Quantity] [decimal](18,6) NULL,
        )



    INSERT INTO GovQuantity
    SELECT  d.NumNameCode
        , Quantity = CASE WHEN QUANTITY < 500 THEN SUM(Quantity) ELSE Quantity END 
          FROM [...]              
    GROUP BY NumNameCode, Quantity

当前拥有这个：

 NameCode     Quantity
 ArmyGuard       125
 ArmyGuard       605
 ArmyGuard       65
 Boeing          420
 Boeing          750
 Boeing          100

需要：

NameCode     Quantity
 ArmyGuard       605
 Boeing          520
 Boeing          750

Answer 1

也许是这样的。

这将显示> = 500的各个行并汇总其他杂项。其他人。

示例

;with cte as (
Select NameCode
      ,Quantity
      ,RN       = Row_Number() over (Partition By NameCode Order by Quantity)
 From  [dbo].[GovQuantity]
)
Select NameCode
      ,Quantity = sum(Quantity)
 From  cte
 Group By NameCode,case when Quantity >=500 then RN else 0 end
 Having sum(Quantity) > 500
 Order by NameCode

返回

NameCode    Quantity
ArmyGuard   605
Boeing      520
Boeing      750

Answer 2

您可以尝试一下。

DECLARE @T TABLE (NameCode  VARCHAR(10), Quantity INT)
INSERT INTO @T VALUES

('ArmyGuard', 125),
('ArmyGuard', 605),
('ArmyGuard', 65 ),
('Boeing   ', 420),
('Boeing   ', 750),
('Boeing   ', 100)


SELECT NameCode, SUM(Quantity) Quantity FROM @T
GROUP BY
    NameCode, 
    (CASE WHEN Quantity < 500 THEN 0 ELSE Quantity END)
HAVING 
    SUM(Quantity) >= 500
ORDER BY 
    NameCode

结果：

NameCode   Quantity
---------- -----------
ArmyGuard  605
Boeing     520
Boeing     750

Answer 3

您似乎想要union all：

select NumNameCode, sum(Quantity) as Quantity
from table t
where Quantity < 500
group by NumNameCode
union all
select NumNameCode, Quantity
from table t
where Quantity >= 500;

Answer 4

最安全的写法是使用union all：

select NameCode, sum(Quantity) as Quantity
from govquantity
where Quantity < 500
group by NameCode
having sum(Quantity) >= 500
union all
select NameCode, Quantity
from govquantity
where Quantity >= 500;

使用单个聚合写这个很诱人：

我想你只是想要

SELECT d.NumNameCode, SUM(Quantity)
FROM [...]     
WHERE QUANTITY < 500         
GROUP BY NumNameCode,
         (CASE WHEN Quantity >= 500 THEN Quantity END)
HAVING SUM(QUANTITY) >= 500;

但是，如果两个quantity值相同且大于500，则会造成混乱。

如果您有一个唯一的ID（或每个名称至少一个唯一），则为：

SELECT d.NumNameCode, SUM(Quantity)
FROM [...]     
WHERE QUANTITY < 500         
GROUP BY NumNameCode,
         (CASE WHEN Quantity >= 500 THEN Id END)
HAVING SUM(QUANTITY) >= 500;

SQL-基于条件的SUM值

4 个答案: