我有一段代码使用 TRY/CATCH 回滚事务,如果 INSERT
失败。但是,在代码的中间,我有一段代码在每个循环中发送一封电子邮件。
我遇到的问题是循环发送电子邮件然后插入。所以假设在 9 个进程/轮之后,第 10 轮失败 INSERT
;然后整个事务回滚,但 9 封邮件已经发送。我该如何改进它以便不先发送电子邮件?或者如果交易失败,如何避免发送任何电子邮件?
这是我的代码的简化版本,用于测试目的。
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[something]
AS
BEGIN
SET NOCOUNT, XACT_ABORT ON;
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
BEGIN TRY
DECLARE @something INT
DECLARE ROW_RES CURSOR FOR
SELECT something
FROM something
OPEN ROW_RES
FETCH NEXT FROM ROW_RES INTO @something
WHILE (@@fetch_status = 0)
BEGIN
IF (@something > 0)
BEGIN
EXEC msdb.dbo.sp_send_dbmail
@profile_name = 'myprofile',
@from_address = 'do_not_reply@me.com',
@recipients = 'me@me.com',
@copy_recipients = 'ccme@me.com',
@subject = @email_subject,
@body = @email_body,
@body_format = 'html'
END
FETCH NEXT FROM ROW_RES INTO @something
END
IF (@something = false )
BEGIN
UPDATE something
SET something = (@something)
WHERE something = @something
END
ELSE IF (@something = true)
BEGIN
INSERT INTO something (something)
VALUES (@something)
END
COMMIT TRAN
END TRY
BEGIN CATCH
DECLARE @MESSAGE NVARCHAR(2000), @SEVERITY INT, @STATE INT
--See if there is a hanging transaction
IF @@TRANCOUNT > 0 ROLLBACK TRAN
--Rethrow the error to the calling application
SET @MESSAGE = ERROR_MESSAGE()
SET @SEVERITY = ERROR_SEVERITY()
SET @STATE = ERROR_STATE()
RAISERROR(@MESSAGE, @SEVERITY, @STATE)
END CATCH
SET NOCOUNT OFF;
END
CLOSE ROW_RES
DEALLOCATE ROW_RES
最佳答案
而不是调用 sp_send_dbmail
在游标内,您可以将所有需要的元数据插入到队列表中,在游标完成后,如果没有问题,您可以运行另一个游标或循环,只为队列表中的每一行发送电子邮件.
关于sql-server - SQL 服务器 : don't send email if transaction rolls back,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45287835/