Question

我正在实施一个执行UPDATE，DELETE和INSERT的关键任务存储过程，我想确保我的TRANSACTION正确形成。

我已经看过一些TRANSACTION语句，每个步骤后都会检查一下。我也看到过这种情况，整个步骤都放在一个TRANSACTION块内，没有任何＆＃34;检查点＆＃34;一路上。

这是一个格式良好的TRANSACTION，如果在任何时候出现任何错误，它会回滚所有内容，即UPDATE，DELETE和INSERT。< / p>

这里是TRANSACTION：

BEGIN TRANSACTION

BEGIN TRY

   UPDATE SomeTable
   SET SomeColumnValue = 123
   WHERE Id = 123456

   DELETE FROM SomeOtherTable
   WHERE Id = 789

   INSERT INTO ThirdTable
      (Column1, Column2)
   VALUE
      ('Hello World', 1234567)  

END TRY
BEGIN CATCH

   ROLLBACK TRANSACTION

END CATCH

Answer 1

您可以使用以下语法。请注意，当从begin try块内部调用另一个具有类似结构的SP时，语法也会处理嵌套事务

BEGIN TRAN

BEGIN TRY

    UPDATE SomeTable
    SET SomeColumnValue = 123
    WHERE Id = 123456

    DELETE FROM SomeOtherTable
    WHERE Id = 789

    INSERT INTO ThirdTable
    (Column1, Column2)
    VALUE
    ('Hello World', 1234567)  

    COMMIT TRAN

END TRY
BEGIN CATCH

    IF @@TRANCOUNT > 0
    ROLLBACK TRAN;

    INSERT INTO LogError (
                        --ErrorID
                        objectName
                        ,ErrorCode
                        ,ErrorDescription
                        ,ErrorGenerationTime            
                             )
    SELECT  
                        -- autogenerated
                        OBJECT_NAME(@@PROCID)
                        ,ERROR_NUMBER() AS ErrorCode
                        ,'Error of Severity: ' + CAST (ERROR_SEVERITY() AS VARCHAR (4))
                         +' and State: ' + CAST (ERROR_STATE() AS VARCHAR (8))
                         +' occured in Line: ' + CAST (ERROR_LINE() AS VARCHAR (10))
                         +' with following Message: ' + ERROR_MESSAGE() AS ErrorColumnDescription
                        ,GETDATE()
END CATCH

Answer 2

您需要在try块中调用 COMMIT TRANSACTION 。这将是try块中的最后一个语句。因此，如果一切顺利，那么它将被提交，否则它将在catch块中回滚。

T-SQL事务语法

2 个答案: