父子關係 - TSQL

Question

我那裏有父母與子女產品的數據。

每個父母得到了一個唯一的代碼（P1），並在他們的帳戶中的鏈接代碼（L1）和父母的每個孩子得到了一個單獨的代碼（C12），但它們共享相同的帳戶沒有。

我想指望家長和孩子

這裏是一個樣本數據集

create table #Something 
(
    Line_no int, 
    code varchar(5), 
    AccountNo char(5) 
) 

一些樣本數據

INSERT #Something 
select 12311, 'P1c', 'Ac115' union all 
select 12311, 'L1', 'Ac115' union all 
select 123, 'C1', 'Ac115' union all 
select 1222, 'C1', 'Ac115' union all 
select 1243, 'C1', 'Ac115' union all 
select 433, 'P1a', 'Ac111' union all 
select 433, 'L1', 'Ac111' union all 
select 4331, 'C1', 'Ac111' union all 
select 543, 'C1', 'Ac222' union all 
select 544, 'C1', 'Ac222' union all 
select 4322, 'P1b', 'Ac222' union all 
select 4322, 'L1', 'Ac222' union all 

select 8766,'P1d' , 'Ab111' union all 
select 8766,'L1' , 'Ab111' union all 
select 8767,'C1', 'Ab111' union all 
select 8789,'P1d', 'Ab119' union all 
select 8766,'L1', 'Ab119' union all 
select 876654,'C1', 'Ab119' union all 
select 876655,'C1', 'Ab119' union all 
select 876698,'P1a', 'Ab117' union all 
select 876698,'L1', 'Ab117' union all 
select 987,'C1', 'Ab117' union all 
select 555444,'P1d','Xcv' union all 
select 555444,'L1','Xcv' union all 
select 6754,'C1','Xcv' 

SELECT * from #Something 

drop table #Something 

所需的輸出是：

[Parent code] [Parent line Count] [Child line Count]  
    P1c    1     3 
    P1a    2     2 
    P1b    1     2 
    P1d    3     4 

謝謝

Answer 1

非常怪異模式，但此查詢會給你想要的東西：

with cte as (
    select 
     max(case when code like 'P%' then code end) as [Parent code], 
     count(case when code like 'P%' then code end) as [Parent line Count], 
     count(case when code like 'C%' then code end) as [Child line Count] 
    from Something 
    group by AccountNo 
) 
select 
    [Parent code], 
    sum([Parent line Count]) as [Parent line Count], 
    sum([Child line Count]) as [Child line Count] 
from cte 
group by [Parent code] 

sql fiddle demo

如果你不喜歡的公用表表達式，你可以使用子查詢：

select 
    [Parent code], 
    sum([Parent line Count]) as [Parent line Count], 
    sum([Child line Count]) as [Child line Count] 
from (
    select 
     max(case when code like 'P%' then code end) as [Parent code], 
     count(case when code like 'P%' then code end) as [Parent line Count], 
     count(case when code like 'C%' then code end) as [Child line Count] 
    from Something 
    group by AccountNo 
) as A 
group by [Parent code]