检查连续值并更新字段

Question

我这里有一张桌子：

在“周号”列中， 我有连续 5 周的数据，每周我都想检查这些情况-

1.每周我都会检查当周的积分。如果当周的积分值为-10，而前一周的积分也是-10，则在表2（下表）的totalpoints字段中添加-40 .

2.我们再次检查本周和前两周的积分。如果连续三周得分为-10，则该人的奖励为-100，并添加到表2中的总积分字段中。（下表）

3。 同样连续四个星期，即本周和前 3 周，如果积分为 -10 ，则将 -200 添加到 table2 的总积分字段。

任何人都可以帮助我如何实现这一目标。 M 使用 sql server。

Answer 1

在这里

; WITH 
u AS (SELECT * from (values (1,'Bob'),(2,'Deepak'),(3,'Brinda'),(4,'Chriss'),(4,'Chriss')) as d (usr,name)),
N AS (SELECT * from (values (1,1,-10),(1,2,-10),(1,3,-10),(1,4,-10),(1,5,-10),(2,1,50),(2,2,40),(2,3,30),(2,4,-10),(2,5,-10),(3,1,60),(3,2,20),(3,3,40),(3,4,-10),(3,5,20),(4,1,-10),(4,2,90),(4,3,50),(4,4,30),(4,5,50)) as d (usr,wk,pt)),
sc as (
    select w.*, case w.pt when -10 then (case w1.pt when -10 then (case w2.pt when -10 then (case w3.pt when -10 then -200 else -100 end) else -40 end) else 0 end) else 0 end x
    from n w
    left join n w1 on w.usr = w1.usr and w.wk = w1.wk+1
    left join n w2 on w.usr = w2.usr and w.wk = w2.wk+2
    left join n w3 on w.usr = w3.usr and w.wk = w3.wk+3
),
l as (
    select *, pt+x as total
    from sc
),
s as (
select usr, sum(total) total
from l
group by usr
)
select u.*,t.*
from s t
inner join u on u.usr = t.usr

如果您想查看所有详细信息，请更改最终选择

select u.*,t.*
from l t
inner join u on u.usr = t.usr

在你的数据库中应该是这样的：

; WITH 
n as (
    select [EmployeeName], CAST(SUBSTRING([Week No.],5,10) AS INT) as wk, Points as pt  
    from YourTable --> Change this to your table
),
sc as (
    select w.*, case w.pt when -10 then (case w1.pt when -10 then (case w2.pt when -10 then (case w3.pt when -10 then -200 else -100 end) else -40 end) else 0 end) else 0 end x
    from n w
    left join n w1 on w.[EmployeeName] = w1.[EmployeeName] and w.wk = w1.wk+1
    left join n w2 on w.[EmployeeName] = w2.[EmployeeName] and w.wk = w2.wk+2
    left join n w3 on w.[EmployeeName] = w3.[EmployeeName] and w.wk = w3.wk+3
),
l as (
    select *, pt+x as total
    from sc
),
s as (
    select [EmployeeName], sum(total) total
    from l
    group by [EmployeeName]
)
select *
from s