Sql 根据日期选择记录

下面是我的查询，我想从那些将首先过期的SKU中选择数量。请帮我怎么做

DECLARE @Data table (Id int identity(1,1)
, SKU varchar(10)
, QtyRec int
, Expiry date
, Rec date)
DECLARE @Qty int = 20

INSERT @Data VALUES
('001A', 5 ,'2017-01-15','2015-11-14'),
('001A', 8 ,'2017-01-10','2015-11-14'),
('001A', 6 ,'2015-12-15','2015-11-15'),
('001A', 25,'2016-01-01','2015-11-16'),
('001A', 9 ,'2015-12-20','2015-11-17')

;WITH sumqty AS 
(
 SELECT *, SUM(QtyRec) OVER (PARTITION BY SKU ORDER BY Id) AS TotalQty FROM @Data
)
,takeqty AS (
SELECT *, 
CASE 
  WHEN @Qty >= TotalQty THEN QtyRec 
  ELSE @Qty - ISNULL(LAG(TotalQty) OVER (PARTITION BY SKU ORDER BY Id), 0)
END AS TakeQty
FROM sumqty
)
SELECT * FROM takeqty WHERE TakeQty > 0

---

有许多可能的结果取决于您的问题：

如果要根据到期日升序排序结果集，请在CTEs查询结束时使用“按到期日排序”。或选择顶部过期：使用“按过期日期选择TOP1行数超额订购”作为“序号”，而不是“按过期日期选择行数超额订购”作为“序号”

---

像这样的：？请阅读。您需要在问题中包含代码，而不仅仅是在外部站点上。请回答您的问题。您确实需要描述您的实际问题。上次是从temp中获取数据。不使用order by and now排序的表。。。嗯，这是不可能知道的。我的问题是我想实现数据检索规则，如。。FEFOFirst EXITION first out、LEFO Last EXITION first out、FIFO FIFO first In first out查询中。。。我想从将首先过期的sku中选择数量。这就是我想要实现的。

DECLARE @Data table (Id int identity(1,1)
, SKU varchar(10)
, QtyRec int
, Expiry date
, Rec date)
DECLARE @Qty int = 20

INSERT @Data VALUES
('001A', 5 ,'2017-01-15','2015-11-14'),
('001A', 8 ,'2017-01-10','2015-11-14'),
('001A', 6 ,'2015-12-15','2015-11-15'),
('001A', 25,'2016-01-01','2015-11-16'),
('001A', 9 ,'2015-12-20','2015-11-17');

WITH sumqty AS 
(
 SELECT *, SUM(QtyRec) OVER (PARTITION BY SKU ORDER BY Id) AS TotalQty FROM @Data
)
,takeqty AS (
SELECT *, 
CASE 
  WHEN @Qty >= TotalQty THEN QtyRec 
  ELSE @Qty - ISNULL(LAG(TotalQty) OVER (PARTITION BY SKU ORDER BY Id), 0)
END AS TakeQty
FROM sumqty
)
SELECT ROW_NUMBER() OVER(ORDER BY Expiry) AS 'SN'
    ,   SKU
    ,   QtyRec
    ,   Expiry
    ,   Rec
    ,   TotalQty
    ,   TakeQty
FROM takeqty WHERE TakeQty > 0
ORDER BY Expiry;