Question

我有一张桌子，上面列出了产品级别的商机历史。如果机会有3个产品，则此机会将有3行条目。如下所示：

AccNum OppNum  Product SnapshotDate  NextStep
  1      1      AAA     2019-04-02   Reach out and gauge interest
  2      1      CCC     2019-04-02   Decision on hold due to paperwork
  2      1      CCC     2019-03-31   NULL
  2      1      CCC     2019-03-24   NULL
  2      2      AAA     2019-04-02   Bid May. Discuss details w/ Vela
  2      2      BBB     2019-04-02   Bid May. Discuss details w/ Vela
  2      2    AAA-Inst. 2019-04-02   Bid May. Discuss details w/ Vela
  2      2      AAA     2019-03-31   Bid May
  2      2      BBB     2019-03-31   Bid May
  2      2    AAA-Inst. 2019-03-31   Bid May

目标是提取先前的SnapshotDate和先前的NextStep，以查看NextStep中的值在最新快照和之前的快照之间是否已更改。

理想的表是这样的（我想对SnapshotDate做NextStep Column那样，我无法在论坛页面上显示出来）

AccNum OppNum  Product SnapshotDate  SnapshotDatePrev
  1      1      AAA     2019-04-02   2019-03-31
  2      1      CCC     2019-04-02   2019-03-31
  2      1      CCC     2019-03-31   2019-03-24
  2      1      CCC     2019-03-24   2019-03-17
  2      2      AAA     2019-04-02   2019-03-31
  2      2      BBB     2019-04-02   2019-03-31
  2      2    AAA-Inst. 2019-04-02   2019-03-31
  2      2      AAA     2019-03-31   2019-03-24
  2      2      BBB     2019-03-31   2019-03-24
  2      2    AAA-Inst. 2019-03-31   2019-03-24

这就是我所做的。我无法正确拉出以前的SnapshotDate。我只能使用Lead函数在当前行之前拉行。我无法根据产品数量来处理每个条目的多个行。（请参阅AccNum：2 OppNum：2）

create table GTM.dbo.Table_History
(
    AccNum int,
    OppNum int,
    Product nvarchar(50),
    SnapshotDate date,
    NextStep nvarchar(150)
)
insert into GTM.dbo.Table_History
values
    (1,1,'AAA','2019-04-02','Reach out and gauge interest'),
    (2,1,'CCC','2019-04-02','Decision on hold due to paperwork'),
    (2,1,'CCC','2019-03-31',NULL),
    (2,1,'CCC','2019-03-24',NULL),
    (2,2,'AAA','2019-04-02','Bid May. Discuss details w/ Vela'),
    (2,2,'BBB','2019-04-02','Bid May. Discuss details w/ Vela'),
    (2,2,'AAA-Inst.','2019-04-02','Bid May. Discuss details w/ Vela'),
    (2,2,'AAA','2019-03-31','Bid May'),
    (2,2,'BBB','2019-03-31','Bid May'),
    (2,2,'AAA-Inst.','2019-03-31','Bid May')

SELECT *
FROM(
SELECT 
AccNum
,OppNum
,Product
,convert(DATE,DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -1)) AS PrevSun
,SnapshotDate
,lead(SnapshotDate) OVER (PARTITION BY AccNum, OppNum ORDER BY SnapshotDate DESC) AS SnapshotDatePrev
,NextStep
,lead(NextStep) OVER (PARTITION BY AccNum, OppNum ORDER BY SnapshotDate DESC) AS NextStepprev
FROM GTM.DBO.Table_History) t1
WHERE t1.SnapshotDatePrev>=t1.PrevSun

任何指导将不胜感激。谢谢！

SQL-当行条目为动态时，将条目拉到先前的日期

0 个答案: