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我想在VB.NET或C＃中編寫Linq子句的代碼，該代碼返回所有記錄，直到其中一個列值的總和達到某個值並分組爲止由另一列..獲取列/字段總和等於某個值的行
現在我有一個在MySQL條款：
SELECT
O.Id,
O.Supp,
O.TotalCol,
(SELECT
sum(TotalCol) FROM Table1
WHERE Id <= O.Id) 'bTotal'
FROM Table1 O
HAVING bTotal <= 50000
代碼我已經做了：
對象類：
Class Invoices
Public id As Integer
Public supplier As String
Public total As Decimal
Public Sub New(ByVal id As Integer, ByVal supplier As String, ByVal total As Decimal)
Me.id = id
Me.supplier = supplier
Me.total = total
End Sub
End Class
的未分組列表：
Dim LInvoicesPrincipal As New List(Of Invoices)()
Dim InvoiceItem As Invoices
InvoiceItem = New Invoices(1, "SUPP 1", 45000)
LInvoicesPrincipal.Add(InvoiceItem)
InvoiceItem = New Invoices(2, "SUPP 1", 6000)
LInvoicesPrincipal.Add(InvoiceItem)
InvoiceItem = New Invoices(3, "SUPP 2", 15000)
LInvoicesPrincipal.Add(InvoiceItem)
InvoiceItem = New Invoices(4, "SUPP 2", 6000)
LInvoicesPrincipal.Add(InvoiceItem)
InvoiceItem = New Invoices(5, "SUPP 1", 4000)
LInvoicesPrincipal.Add(InvoiceItem)
在LINQ分組，由提供商（我需要限制的總數的總和到一定值的規則（50000要準確））：
Dim LGroups
LGroups = _
From oInvoices In LInvoicesPrincipal _
Group oInvoices By oInvoices.supplier _
Into Group Select Group
而且一個For Each，讓我來驗證分組：
For Each EachList As Invoices() In LGroups
For Each EachItem As Invoices In EachList
Next
Next
這一切現在返回我列出這樣的：
Group 1:
Invoices(1, "SUPP 1", 45000)
Invoices(2, "SUPP 1", 6000)
Invoices(5, "SUPP 1", 4000)
Group 2:
Invoices(3, "SUPP 2", 15000)
Invoices(4, "SUPP 2", 6000)
但是......我想是這樣的：
Group 1:
Invoices(1, "SUPP 1", 45000)
Invoices(5, "SUPP 1", 4000)
Group 2:
Invoices(2, "SUPP 1", 6000)
Group 3:
Invoices(3, "SUPP 2", 15000)
Invoices(4, "SUPP 2", 6000)
（值的總和必須< = 50000每組）
請提供您已經完成的一些安排和代碼。 – kat1330
你最後一個（刪除）問題，它更多的是一個組合的東西或一個最佳適合算法。我不確定你可以在SQL – Plutonix
中做任何事情也許這是兩者的結合......我已經在腦海中循環着同樣的想法，我需要一個喘息的機會...... – Glegan