CREATE PROCEDURE [dbo].[up_mail_gold_payment]
@mail_id [uniqueidentifier],
@msg 	     nvarchar(350) = 'Bill'
as 
set nocount on

declare @character_id			[uniqueidentifier],
	    @sender_character_id	[uniqueidentifier],  
		@NewMailID				[uniqueidentifier]

declare @sender_name nvarchar(16),
		@recver_name nvarchar(16)

declare @my_money    int,
		@req_money   int

begin tran

    if EXISTS (select [ID] from MailTable with (READUNCOMMITTED) where [ID] = @mail_id)
		begin
			--皋老 夸没 陛咀 犬牢
			select 
				 @character_id        = [character_id]
				,@recver_name         = [receiver]
				,@sender_character_id = [send_character_id]
				,@sender_name         = [sender]
				,@req_money           = [req_gold]
			from MailTable with (READUNCOMMITTED) where [ID] = @mail_id

			--郴捣 犬牢
			SELECT @my_money = [gold] FROM [dbo].[CharacterTable] with (READUNCOMMITTED) where [character_id] = @character_id

			-- 捣 昏力
			if (@my_money - @req_money) > 0
				begin
					UPDATE [dbo].[CharacterTable] SET [gold] = (@my_money - @req_money) WHERE [character_id] = @character_id			
				end
			else
				begin
					UPDATE [dbo].[CharacterTable] SET [gold] = 0 WHERE [character_id] = @character_id			
				end

			-- 措陛 皋老 眠啊
			insert into MailTable
			values
			( NEWID(),              --0
			  @sender_character_id, --1
			  @sender_name,         --2
			  @character_id,		--3
			  @recver_name,         --4
			  @msg,       --3
			  @req_money,			--4
			  0,
			  0,
			  0,            --8
			  GETDATE(),
			  6				-- 措陛 快祈 
			);
	
		--老馆 快祈栏肺 官操扁
		UPDATE [dbo].[MailTable] 
		SET 
		 [return_day]  = 0
		,[req_gold]    = 0
		,[is_open]     = 0
        ,[create_type] = 0
		WHERE [ID] = @mail_id
		
		--官诧 皋老 沥焊 促矫 犬牢
		select * from dbo.MailTable with (READUNCOMMITTED) where [ID] = @mail_id

		end

declare @ERR int

 SET @ERR = @@ERROR
        IF @ERR <> 0 BEGIN
	RAISERROR('贸府坷幅', 16, 10)
  	IF @@TRANCOUNT <> 0  ROLLBACK
		RETURN (@ERR)
	END
       COMMIT TRAN