SQL Server 2008-刪除具有FK約束的行

Question

我在SQL Server 2008中生成了SQL數據庫，如下所示：

CREATE TABLE Client ( 
    ID bigint,
    Code varchar(50),
    ClientID int NOT NULL
);
ALTER TABLE Client 
  ADD CONSTRAINT PK_Client PRIMARY KEY CLUSTERED (ClientID);

CREATE TABLE Company ( 
    ID bigint,
    Description nvarchar(100),
    SubsidiaryOf bigint,
    companyID int NOT NULL,
    FK_Client_Company int,
    PK_Company int
);
ALTER TABLE Company 
  ADD CONSTRAINT PK_Company PRIMARY KEY CLUSTERED (companyID);

ALTER TABLE Company 
  ADD CONSTRAINT (ID = ID) FOREIGN KEY (FK_Client_Company) 
      REFERENCES Client (ClientID);

ALTER TABLE Company 
  ADD CONSTRAINT (SubsidiaryOf = ID) FOREIGN KEY (PK_Company) 
      REFERENCES Company (companyID);

CREATE TABLE ContactData ( 
    ID bigint,
    LocationID bigint,
    Contact nvarchar(50),
    contactDataID int NOT NULL,
    PK_Location int
);
ALTER TABLE ContactData 
  ADD CONSTRAINT PK_ContactData PRIMARY KEY CLUSTERED (contactDataID);

ALTER TABLE ContactData 
  ADD CONSTRAINT (LocationID = ID) FOREIGN KEY (PK_Location) 
      REFERENCES Location (locationID);


CREATE TABLE Location ( 
    ID bigint,
    CompanyID bigint,
    Country nvarchar(50),
    ZIPCode nvarchar(50),
    locationID int NOT NULL,
    PK_Company int
);
ALTER TABLE Location 
   ADD CONSTRAINT PK_Location PRIMARY KEY CLUSTERED (locationID);

ALTER TABLE Location 
   ADD CONSTRAINT (CompanyID = ID) FOREIGN KEY (PK_Company) 
       REFERENCES Company (companyID);

並希望刪除所有ID> 140000的公司（其他表中具有相關行）。 我在一個事務中嘗試了將所有INNER JOIN組合在一起，但是FK_Client_Company約束仍然存在問題。 誰能幫我？

還有一件事-我無法添加任何內容/修改數據庫結構/約束。 它必須是基於查詢的解決方案。

Answer 1

首先刪除這些公司的客戶

    delete client where id in (select fk_client_company from company where id > 140000)

之后，您應該能夠在company表上運行delete語句

    delete company where id > 140000

我“很”肯定這是您要尋找的答案，但我並不是100％肯定，只是因為您的命名方案有點奇怪。 我假設company.fk_client_company = client.id。