創建外鍵約束的SQL Server錯誤

Question

我想重新創建最近被刪除的外鍵約束，並且SQL Server不讓我。下面是SQL Server Management Studio中給我的DDL：

/* To prevent any potential data loss issues, you should review this script in detail before running it outside the context of the database designer.*/ 
BEGIN TRANSACTION 
SET QUOTED_IDENTIFIER ON 
SET ARITHABORT ON 
SET NUMERIC_ROUNDABORT OFF 
SET CONCAT_NULL_YIELDS_NULL ON 
SET ANSI_NULLS ON 
SET ANSI_PADDING ON 
SET ANSI_WARNINGS ON 
COMMIT 
BEGIN TRANSACTION 
GO 
ALTER TABLE dbo.CleansingOperations SET (LOCK_ESCALATION = TABLE) 
GO 
COMMIT 
BEGIN TRANSACTION 
GO 
ALTER TABLE dbo.CleansedData ADD CONSTRAINT 
    FK_CleansedData_CleansingOperations FOREIGN KEY 
    (
    CleansedOperationID 
    ) REFERENCES dbo.CleansingOperations 
    (
    CleansingOperationID 
    ) ON UPDATE NO ACTION 
    ON DELETE NO ACTION 

GO 
ALTER TABLE dbo.CleansedData SET (LOCK_ESCALATION = TABLE) 
GO 
COMMIT 

，這裏是我得到的錯誤，當我運行它：

消息547，級別16，狀態0，第1行
ALTER TABLE語句與FOREIGN KEY約束「FK_CleansedData_CleansingOperations」衝突。衝突發生在數據庫「NetVis203」，表「dbo.CleansingOperations」，列「CleansingOperationID」。

Msg 3902，Level 16，State 1，Line 1
COMMIT TRANSACTION請求沒有對應的BEGIN TRANSACTION。

這是什麼意思？據我所知，這是說約束與自身「衝突」！

Answer 1

這意味着，有一個在CleansedData的行不具有CleansingOperations

SELECT CleansingOperationId FROM dbo.CleansedData 
EXCEPT 
SELECT CleansingOperationId FROM dbo.CleansingOperations 

對應的行應該不返回行的發言工作。

有一個NOCHECK關鍵字，它可以解決錯誤，但更好地瞭解哪些行會違反外鍵。

錯誤消息的原因是SQL Server想象外鍵已就位，然後在提交語句之前斷言所有行滿足約束。第二個錯誤信息的原因與錯誤處理有關（我永遠也無法得到）。