sql query (id,parentId) 结构中的层级累加和

Question

我有两个表，我想获取所有帐户及其贷方金额和借方金额甚至父记录也必须对它们的子值求和

我正在实施 Id ParentId 结构。

1- [AccountChart] Table 具有这些字段：

Id smallint
ParentId smallint Null
AccountName nvarchar(100)

2- [交易] Table 具有这些字段

AccountId smallInt
TransactionDate DateTime
Debit decimal(19,5)
Credit decimal(19,5)

这是我试过的

    Create table [AccountChart] (
    id int not null,
    parentId int null,
    AccountName nvarchar(100)

    PRIMARY KEY (ID)
      )

    Create table [TransactionData] (
    id int not null,
    TransactionDate DateTime not null,
    AccountId int not null,
    Credit decimal(19,5),
    Debit decimal(19,5)

    PRIMARY KEY (ID)
    )

    insert into [AccountChart] (id,parentId,AccountName) values (1,null,'level 0');
    insert into [AccountChart] (id,parentId,AccountName) values (2,1,'level 2');
    insert into [AccountChart] (id,parentId,AccountName) values (3,2,'level 3 - 1');
    insert into [AccountChart] (id,parentId,AccountName) values (4,2,'level 3 - 2 ');


    insert into [TransactionData] (id,TransactionDate,AccountId,Credit,Debit) values (1,'2020-03-17',3,1000.0,0.0)
    insert into [TransactionData] (id,TransactionDate,AccountId,Credit,Debit) values (2,'2020-03-17',3,0.0,1000.0)
    insert into [TransactionData] (id,TransactionDate,AccountId,Credit,Debit) values (3,'2020-03-17',4,4000.0,0.0)
    insert into [TransactionData] (id,TransactionDate,AccountId,Credit,Debit) values (4,'2020-03-17',3,6000.0,0.0)
    insert into [TransactionData] (id,TransactionDate,AccountId,Credit,Debit) values (5,'2020-03-17',4,3000.0,0.0)


    ;WITH cteBalances (AccountId, ParentId, Credit, Debit)
    AS (SELECT
      AccountChart.Id,
      AccountChart.ParentId,
      SUM([TransactionData].Credit) AS Credit,
      SUM([TransactionData].Debit) AS Debit
     FROM [TransactionData]
     INNER JOIN AccountChart ON ([TransactionData].AccountId = AccountChart.Id)
     GROUP BY AccountChart.Id,AccountChart.ParentId)

    SELECT
      AccountChart.id,
      AccountChart.ParentId,
      AccountChart.AccountName,
      cteBalances.Credit,
      cteBalances.Debit
    FROM  AccountChart 
    left JOIN cteBalances ON (AccountChart.ID = cteBalances.AccountID)

无法带上父记录汇总值的问题

我得到的结果是：

id  ParentId    AccountName   Credit        Debit
1   NULL        level 0       NULL          NULL
2   1           level 2       NULL          NULL
3   2           level 3 - 1   7000.00000    1000.00000
4   2           level 3 - 2   7000.00000    0.00000

但我希望像这样计算父级中的子级

id  ParentId    AccountName   Credit        Debit
1   NULL        level 0       14000.00000   1000.00000
2   1           level 2       14000.00000   1000.00000
3   2           level 3 - 1   7000.00000    1000.00000
4   2           level 3 - 2   7000.00000    0.00000

Answer 1

我喜欢使用范围键的技巧。 如果您的层次结构移动缓慢，我会创建一个table来存储这些值

只是为了扩展，范围键方便选择，和可变深度聚合。

您可能会注意到 SEQ 有一个 Order by AccountName。在我的 GL 系统中，我们有一列用于表示顺序。这控制顺序而不是帐户上名称或有效数字的字母顺序。

例子

Declare @Top  int         =  null   --<<  Sets top of Hier Try 2
Declare @Nest varchar(25) = '|---'  --<<  Optional: Added for readability

;with cteP as (
      Select Seq  = cast(10000+Row_Number() over (Order by AccountName) as varchar(500))
            ,ID
            ,ParentID 
            ,Lvl=1
            ,AccountName
      From   [AccountChart] 
      Where  IsNull(@Top,-1) = case when @Top is null then isnull(ParentID ,-1) else ID end
      Union  All
      Select Seq  = cast(concat(p.Seq,'.',10000+Row_Number() over (Order by r.AccountName)) as varchar(500))
            ,r.ID
            ,r.ParentID 
            ,p.Lvl+1
            ,r.AccountName
      From   [AccountChart] r
      Join   cteP p on r.ParentID  = p.ID)
     ,cteR1 as (Select *,R1=Row_Number() over (Order By Seq) From cteP)
     ,cteR2 as (Select A.ID,R2=Max(B.R1) From cteR1 A Join cteR1 B on (B.Seq like A.Seq+'%') Group By A.Seq,A.ID )
Select A.Lvl
      ,A.R1  
      ,B.R2
      ,A.ID
      ,A.ParentID 
      ,AccountName = max(Replicate(@Nest,A.Lvl-1) + A.AccountName)
      ,Credit      = sum(C.Credit)
      ,Debit       = sum(C.Debit)
 From cteR1 A
 Join cteR2 B on A.ID=B.ID
 Join (Select _R1=A.R1,B.* From cteR1 A Join [TransactionData] B on A.ID=B.AccountID ) C on (C._R1 between A.R1 and B.R2)
 Group By A.R1,B.R2,A.Lvl,A.ID,A.ParentID
 Order By A.R1

Returns

sql query (id,parentId) 结构中的层级累加和

Hierarchical cumulative sum in sql query (id,parentId) structure

sql

database

sql-server

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database-administration