在MS SQL Server Management Studio中处理事务的最佳方法

假设我有一个SQL语句，它在语法和语义上都是正确的，所以它可以执行

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在ManagementStudio（或任何其他查询工具）中，我如何测试SQL语句，如果我注意到它们破坏了某些东西，则回滚（在单独的查询中？

最简单的方法是将代码包装到事务中，然后逐行执行每批T-SQL代码

比如说,

Begin Transaction

         -Do some T-SQL queries here.

Rollback transaction -- OR commit transaction

如果您想合并错误处理，可以使用TRY…CATCH块。如果发生错误，您可以在catch块中回滚传输

例如：

USE AdventureWorks;
GO
BEGIN TRANSACTION;

BEGIN TRY
    -- Generate a constraint violation error.
    DELETE FROM Production.Product
    WHERE ProductID = 980;
END TRY
BEGIN CATCH
    SELECT 
        ERROR_NUMBER() AS ErrorNumber
        ,ERROR_SEVERITY() AS ErrorSeverity
        ,ERROR_STATE() AS ErrorState
        ,ERROR_PROCEDURE() AS ErrorProcedure
        ,ERROR_LINE() AS ErrorLine
        ,ERROR_MESSAGE() AS ErrorMessage;

    IF @@TRANCOUNT > 0
        ROLLBACK TRANSACTION;
END CATCH;

IF @@TRANCOUNT > 0
    COMMIT TRANSACTION;
GO

有关更多详细信息，请参阅以下链接

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希望这有帮助，但如果你需要更多的细节，请让我知道

我想添加一点，如果您在测试模式下，您还可以（如果您编写的内容很复杂，那么应该）添加一个测试变量以回滚。然后你就可以一次完成整个任务。我还经常添加代码来查看各种操作的前后结果，特别是如果它是一个复杂的脚本

示例如下：

USE AdventureWorks;
GO
DECLARE @TEST INT = 1--1 is test mode, use zero when you are ready to execute
BEGIN TRANSACTION;

BEGIN TRY
     IF @TEST= 1
        BEGIN
            SELECT *FROM Production.Product
                WHERE ProductID = 980;
        END    
    -- Generate a constraint violation error.
    DELETE FROM Production.Product
    WHERE ProductID = 980;

     IF @TEST= 1
        BEGIN
            SELECT *FROM Production.Product
                WHERE ProductID = 980;
            IF @@TRANCOUNT > 0
                ROLLBACK TRANSACTION;
        END    
END TRY

BEGIN CATCH
    SELECT 
        ERROR_NUMBER() AS ErrorNumber
        ,ERROR_SEVERITY() AS ErrorSeverity
        ,ERROR_STATE() AS ErrorState
        ,ERROR_PROCEDURE() AS ErrorProcedure
        ,ERROR_LINE() AS ErrorLine
        ,ERROR_MESSAGE() AS ErrorMessage;

    IF @@TRANCOUNT > 0
        ROLLBACK TRANSACTION;
END CATCH;

IF @@TRANCOUNT > 0 AND @TEST = 0
    COMMIT TRANSACTION;
GO

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嗨，谢谢。我第一次在这里看到了关于@TRANCOUNT的内容，您能告诉我回滚处理后“IF@@TRANCOUNT>0提交事务”会发生什么情况吗？“TRANCOUNT”有什么价值？再次感谢。在执行回滚事务后@@TRANCOUNT被设置回0。此时，提交事务将不会执行。看见