Question

我需要从存储过程中获取受影响的记录。基于此值，我想更新用户是否已完成操作。

但我的OUTPUT @RecordsAffected参数始终为0

如何获取在交易中插入的记录数

关注How can I get the number of records affected by a stored procedure?和http://rusanu.com/2009/06/11/exception-handling-and-nested-transactions/

这是我的程序

ALTER PROCEDURE [dbo].[SaveRoleFeatures]          
(        
@RoleId INT,        
@SelectedFeatures AS IdInt READONLY,
@RecordsAffected INT OUTPUT      
)       
AS      

BEGIN  

set nocount on;

DECLARE     @ErrorCode  int  
SELECT @ErrorCode = @@ERROR
declare @trancount int;
set @trancount = @@trancount;

BEGIN TRY     

 BEGIN TRAN

     DELETE FROM RoleXFeature WHERE RoleIid= @RoleId  

     INSERT RoleXFeature      
      (      
       RoleIid,      
       FeatureId,      
       IsDeleted  
      )      
      SELECT      

       @RoleId,      
       Id,
       0    

      FROM  @SelectedFeatures 

COMMIT TRAN

              SET @RecordsAffected = @@ROWCOUNT

  END TRY

  BEGIN CATCH

declare @error int, @message varchar(4000), @xstate int;
    select @error = ERROR_NUMBER(),
             @message = ERROR_MESSAGE(), @xstate = XACT_STATE();
    if @xstate = -1
        rollback;
    if @xstate = 1 and @trancount = 0
        rollback
    if @xstate = 1 and @trancount > 0
        rollback transaction SaveRoleFeatures;

    raiserror ('usp_my_procedure_name: %d: %s', 16, 1, @error, @message) ;
    return;

  END CATCH


  END

Answer 1

您需要在提交之前检查@@ROWCOUNT。

作为@GSerg noted，这是因为@@ rowcount应该返回受最后一个语句影响的行数，而commit是一个documented语句，用于将@@ rowcount设置为0。 / p>

获取在Transaction中插入的记录

1 个答案: