我如何在 LINQ 中使用 SQL 內連接語句作為查詢

Question

SELECT
    Id,
    No,
    NetAmount,
    PaidAmount,
    NetAmount - PaidAmount AS AmountToBePayed
FROM
    (
        SELECT
            m.Id,
            m.No,
            SUM(NetAmount) as NetAmount,
            (
                SELECT
                    COALESCE( SUM( PaidAmount ), 0 )
                FROM
                    A_Account_Payable_Payment_Invoice
            ) as PaidAmount
        FROM
            A_Account_Payable_Invoice_M m
            INNER JOIN A_Account_Payable_Invoice_Item d ON
                m.Id = d.A_Account_Payable_Invoice
        GROUP BY
            m.Id,
            m.No
    ) a

如何直接在 LINQ C# 中使用此查詢

Answer 1

正如您在評論部分提到的，您不想將 SQL 轉換為 LINQ，您只想直接運行此腳本。

為此，您首先需要創建與您的腳本匹配的類，例如：

 [DataContract()]
 public class PaymentInvoiceResult
 {
    [DataMember]
    public int Id { get; set; }

    [DataMember]
    public int No { get; set; }

    [DataMember]
    public int NetAmount { get; set; }

    [DataMember]
    public int PaidAmount { get; set; }

    [DataMember]
    public int AmountToBePayed { get; set; }
 }

然后你需要使用SqlQuery如下：

List<PaymentInvoiceResult> paymentInvoiceResultList = db.Database.SqlQuery<PaymentInvoiceResult>("Your Script").ToList(); 

Answer 2

您可以簡單地使用：

var results = db.ExecuteQuery(typeof(DTO), "sql query ");

您的 dto 應該有成員：

Id,
    No,
    NetAmount,
    PaidAmount,
    NetAmount - PaidAmount AS AmountToBePayed