1

我希望确保在 SQL Server 2012 上的 Try/Catch 块中使用 Execute As/Revert 时使用“最佳”模式。下面的代码“似乎”行为正确......我是否遗漏了任何东西或在那里任何安全问题，“更好”的方法等？

下面是我的代码：

CREATE PROCEDURE [dbo].[TryItOut]
WITH EXECUTE as 'NoTable1Access' --does not have access (select) to Table1!
AS
Begin
  Declare @execErrorNumber int,
           @execErrorMessage nvarchar(2048),
           @xactState smallint

  Begin Try
    Execute as user='HasTable1Access'
    select *, 1/0 as [SimulateError] from [T1].[Table1]; -- This will be a Stored Procedure call, but a select statement was easier to demo...
    Revert --Revert on 'HasTable1Access'
  End Try
  Begin Catch;

        select @execErrorNumber = ERROR_NUMBER(),
               @execErrorMessage = ERROR_MESSAGE(),
               @xactState = XACT_STATE();

        Revert -- Revert on 'HasTable1Access' when in error...
        --Do some error processing in context of 'NoTable1Access'
   End Catch 

   select * from [T1].[Table1] --Should NOT have any access now and select should fail...
End
4

0 回答 0