SQL 服务器 - Select 与 Group By 一起 Raw_Number

Question

我正在使用 SQL Server 2000 (80)。所以，无法使用LAG功能。

我有一个包含四列的数据集的代码：

Purchase_Date

Facility_no

Seller_id

Sale_id

我需要确认失踪 Sale_ids。所以每个 sale_id 都是 100% 连续的，所以顺序不应该有任何间隙。

如果指定，此代码适用于特定日期和商店。但是我需要处理整个数据集，循环遍历每个 facility_id 和每个 seller_id 永远 purchase_date

declare @MAXCOUNT int

set @MAXCOUNT = 
(
    select MAX(Sale_Id) 
    from #table 
    where
        Facility_no in (124) and
        Purchase_date = '2/7/2020'
        and Seller_id = 1
)

;WITH TRX_COUNT AS
(
SELECT 1 AS Number
union all
select Number + 1 from TRX_COUNT
where Number < @MAXCOUNT
)
select * from TRX_COUNT 
where 
Number NOT IN 
(
    select Sale_Id
    from #table 
    where
    Facility_no in (124) 
    and Purchase_Date = '2/7/2020' 
    and seller_id = 1
)   
    order by Number
    OPTION (maxrecursion 0)

我的数据集

Answer 1

本栏目：

case when 
Sale_Id=0 or 1=Sale_Id-LAG(Sale_Id) over (partition by Facility_no, Purchase_Date, Seller_id)
then 'OK' else 'Previous Missing' end

会告诉您哪些 Seller_Ids 缺少一些促销活动。如果你想更进一步并得到你想要的输出，那么过滤掉并区分 'Previous Missing' 个，然后加入一个计数 table on not exists.

编辑：OP 在评论中提到他们不能使用 LAG()。那么我的建议是：

制作一个温度 table 具有最大 (sale_id) 组 facility/seller_id
然后你可以通过这个伪代码查询得到你丢失的结果：

    Select ...
    from temptable t
    inner join tally N on t.maxsale <=N.num
    where not exists( select ... from sourcetable s where s.facility=t.facility and s.seller=t.seller and s.sale=N.num)


> because the only way to "construct" nonexisting combinations is to construct them all and just remove the existing ones.

Answer 2

这个成功了

; WITH cte_Rn AS (
SELECT *, ROW_NUMBER() OVER(PARTITION BY Facility_no, Purchase_Date, Seller_id ORDER BY Purchase_Date) AS [Rn_Num] 
FROM (
        SELECT 
            Facility_no,
            Purchase_Date,
            Seller_id,
            Sale_id
        FROM  MyTable WITH (NOLOCK)
    ) a
)
, cte_Rn_0 as (
SELECT 
    Facility_no,
    Purchase_Date,
    Seller_id,
    Sale_id, 
--  [Rn_Num] AS 'Skipped Sale'
--  , case when Sale_id = 0 Then [Rn_Num] - 1 Else [Rn_Num] End AS 'Skipped Sale for 0'
    , [Rn_Num] - 1 AS 'Skipped Sale for 0'
FROM cte_Rn a
)
SELECT 
    Facility_no,
    Purchase_Date,
    Seller_id,
    Sale_id, 
--  [Skipped Sale],
    [Skipped Sale for 0]
FROM cte_Rn_0 a
WHERE NOT EXISTS 
        (  
            select * from cte_Rn_0 b 
            where b.Sale_id = a.[Skipped Sale for 0]
            and a.Facility_no = b.Facility_no 
            and a.Purchase_Date = b.Purchase_Date 
            and a.Seller_id = b.Seller_id
        )
--ORDER BY Purchase_Date ASC

SQL 服务器 - Select 与 Group By 一起 Raw_Number

SQL Server - Select with Group By together Raw_Number

tsql

select

grouping

window-functions

row-number