Question

我的要求是双重的，我有一个巨大的源表，其中包含数百万条记录，并且需要在截止日期之后获取记录，然后查找是否有任何相关记录具有相同的元数据并将其分组。相关记录可以从截止日期之前的日期开始。原始表格

Account Company  Ledger P01   P02---P12              Date
1000     XYZ      XX     0   20                    07/06/18
2000     XYZ      XX     0   30                    07/06/18
1000     XYZ      XX     10  30                    07/01/18
3000      XYZ     XX     20  50                    06/05/18
Cutoff date =  07/05/18
Expected result
Account Company           Ledger      P01 P02---P12 
1000       XYZ             XX         10   50  
2000      XYZ              XX          0   30

Answer 1

我尚未在iSeries上对其进行测试

SELECT account, company, ledger, sum(P01) , sum(P02) 
from test_1 t
where exists (select 1 from test_1 
               where date1 > '2018-07-05' 
                 and account =  t.account 
                 and company = t.company 
                 and ledger = t.ledger)
group by account, company, ledger

由于稀疏描述，分组列或列名可能需要调整

Answer 2

我认为以下内容可以满足您的需求。

with MYDATA as (
    select distinct Account as Act, Company as Cmp, Ledger as Ldgr
    from MYTABLE
    where Date > Cutoff_Date)
select Account, Company, Ledger, sum(P01), sum(P02)
from MYTABLE join MYDATA
    on Account = Act and Company = Cmp and Ledger = Ldgr
group by Account, Company, Ledger

需要查找指定日期之后存在的记录的重复记录

2 个答案: