噸-SQL測試數據倉庫的2型變化

Question

我需要看一個數據倉庫，檢查一2型變正常工作

我需要檢查vaild瞭解最新的一排是一樣的vaild從下一行的日期開始。

此檢查，以確保行已經結束也已經正確啓動

感謝，馬克

Answer 1

以下涉及金博爾型維度表。

注意，這個假設

1. 3000-01-01作爲當前條目在不遠的將來的日期。
2. CustomerKey是一個自動遞增整數。

這個例子應該給你列出缺少或未匹配的下一個條目的行。

; 
with 
q_00 as (
select 
     CustomerKey 
    , CustomerBusinessKey 
    , rw_ValidFrom 
    , rw_ValidTo 
    , row_number() over (partition by CustomerBusinessKey order by CustomerKey asc) as rn 
from dimCustomer 
) 
select 
     a.CustomerKey 
    , a.CustomerBusinessKey 
    , a.rw_ValidFrom 
    , a.rw_ValidTo 
    , b.CustomerKey   as b_key 
    , b.CustomerBusinessKey as b_bus_key 
    , b.rw_ValidFrom   as b_ValidFrom 
    , b.rw_ValidTo   as b_ValidTo 
from  q_00 as a 
left join q_00 as b on b.CustomerBusinessKey = a.CustomerBusinessKey and (b.rn = a.rn + 1) 
where a.rw_ValidTo < '3000-01-01' 
    and a.rw_ValidTo != b.rw_ValidFrom ; 

也有用

-- Make sure there are no nulls 
-- for rw_ValidFrom, rw_ValidTo 
select 
     CustomerKey 
    , rw_ValidFrom 
    , rw_ValidTo 
from dimCustomer 
where rw_ValidFrom is null 
    or rw_ValidTo is null ; 

-- make sure there are no duplicates in rw_ValidFrom 
-- for the same customer 
select 
     CustomerBusinessKey 
    , rw_ValidFrom 
    , count(1) as cnt 
from dimCustomer 
group by CustomerBusinessKey, rw_ValidFrom 
having count(1) > 1 ; 

-- make sure there are no duplicates in rw_ValidTo 
-- for the same customer 
select 
     CustomerBusinessKey 
    , rw_ValidTo 
    , count(1) as cnt 
from dimCustomer 
group by CustomerBusinessKey, rw_ValidTo 
having count(1) > 1 ;