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

比方说，我有一个SQL语句在语法和语义上是正确的，所以它执行。

在Management Studio（或任何其他查询工具）中，如何testingSQL语句，如果我注意到他们打破了某些内容，则回滚（在单独的查询中）？

Answer 1

最简单的做法是将代码包装在事务中，然后逐行执行每批T-SQL代码。

例如，

Begin Transaction -Do some T-SQL queries here. Rollback transaction -- OR commit transaction 

如果你想joinerror handling，你可以通过使用TRY … CATCH BLOCK来实现。 如果发生错误，则可以在catch块中回滚tranasction。

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 

请参阅以下链接了解更多详情。

http://msdn.microsoft.com/en-us/library/ms175976.aspx

希望这可以帮助，但请让我知道，如果你需要更多的细节。

Answer 2

我想添加一点，你也可以（也应该如果你写的是复杂的）添加一个testingvariables回滚，如果你在testing模式。 那么你可以一次执行整个事情。 通常我也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