是否有一种方法可以立即停止SQL服务器中SQL脚本的执行,如“break”或“exit”命令?
我有一个脚本,它在开始插入之前执行一些验证和查找,我希望它在任何验证或查找失败时停止。
是否有一种方法可以立即停止SQL服务器中SQL脚本的执行,如“break”或“exit”命令?
我有一个脚本,它在开始插入之前执行一些验证和查找,我希望它在任何验证或查找失败时停止。
当前回答
进一步细化Sglasses方法,上面的代码行强制使用SQLCMD模式,如果不使用SQLCMD模式,则终止脚本,或者使用:on error exit在出现任何错误时退出 CONTEXT_INFO用于跟踪状态。
SET CONTEXT_INFO 0x1 --Just to make sure everything's ok
GO
--treminate the script on any error. (Requires SQLCMD mode)
:on error exit
--If not in SQLCMD mode the above line will generate an error, so the next line won't hit
SET CONTEXT_INFO 0x2
GO
--make sure to use SQLCMD mode ( :on error needs that)
IF CONTEXT_INFO()<>0x2
BEGIN
SELECT CONTEXT_INFO()
SELECT 'This script must be run in SQLCMD mode! (To enable it go to (Management Studio) Query->SQLCMD mode)\nPlease abort the script!'
RAISERROR('This script must be run in SQLCMD mode! (To enable it go to (Management Studio) Query->SQLCMD mode)\nPlease abort the script!',16,1) WITH NOWAIT
WAITFOR DELAY '02:00'; --wait for the user to read the message, and terminate the script manually
END
GO
----------------------------------------------------------------------------------
----THE ACTUAL SCRIPT BEGINS HERE-------------
其他回答
这是存储过程吗?如果是这样,我认为你可以只做一个返回,如“返回NULL”;
你可以使用GOTO语句。试试这个。这对你很有用。
WHILE(@N <= @Count)
BEGIN
GOTO FinalStateMent;
END
FinalStatement:
Select @CoumnName from TableName
这些都不能用于“GO”语句。在这段代码中,无论严重程度是10还是11,都将得到最终的PRINT语句。
测试脚本:
-- =================================
PRINT 'Start Test 1 - RAISERROR'
IF 1 = 1 BEGIN
RAISERROR('Error 1, level 11', 11, 1)
RETURN
END
IF 1 = 1 BEGIN
RAISERROR('Error 2, level 11', 11, 1)
RETURN
END
GO
PRINT 'Test 1 - After GO'
GO
-- =================================
PRINT 'Start Test 2 - Try/Catch'
BEGIN TRY
SELECT (1 / 0) AS CauseError
END TRY
BEGIN CATCH
SELECT ERROR_MESSAGE() AS ErrorMessage
RAISERROR('Error in TRY, level 11', 11, 1)
RETURN
END CATCH
GO
PRINT 'Test 2 - After GO'
GO
结果:
Start Test 1 - RAISERROR
Msg 50000, Level 11, State 1, Line 5
Error 1, level 11
Test 1 - After GO
Start Test 2 - Try/Catch
CauseError
-----------
ErrorMessage
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Divide by zero error encountered.
Msg 50000, Level 11, State 1, Line 10
Error in TRY, level 11
Test 2 - After GO
实现这一功能的唯一方法是编写没有GO语句的脚本。有时候这很简单。有时候真的很困难。(使用IF @error <> 0 BEGIN ....)
如果你可以使用SQLCMD模式,那么咒语
:on error exit
(包括冒号)将导致RAISERROR实际停止脚本。例如,
:on error exit
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[SOMETABLE]') AND type in (N'U'))
RaisError ('This is not a Valid Instance Database', 15, 10)
GO
print 'Keep Working'
将输出:
Msg 50000, Level 15, State 10, Line 3
This is not a Valid Instance Database
** An error was encountered during execution of batch. Exiting.
批次就会停止。如果SQLCMD模式未打开,则会得到关于冒号的解析错误。不幸的是,如果脚本没有在SQLCMD模式下运行,那么它并不是完全防弹的,SQL management Studio甚至可以轻松地跳过解析时间错误!不过,如果您从命令行运行它们,这是没问题的。
非常感谢这里的其他人以及我读过的其他帖子。 但没有什么能满足我所有的需求,直到@jaraics回答。
我所见过的大多数答案都忽略了具有多个批处理的脚本。他们忽略了SSMS和SQLCMD的双重用法。我的脚本在SSMS中是完全可运行的——但我想要F5预防,这样他们就不会在意外中删除现有的对象集。
SET PARSEONLY ON工作得很好,可以防止不必要的F5。但是你不能用SQLCMD运行。
另一件让我慢下来的事情是Batch在出现错误时如何跳过任何进一步的命令-所以我的SET NOCOUNT ON被跳过,因此脚本仍然运行。
不管怎样,我稍微修改了一下jaraics的答案:(在这种情况下,我还需要一个数据库从命令行激活)
-----------------------------------------------------------------------
-- Prevent accidental F5
-- Options:
-- 1) Highlight everything below here to run
-- 2) Disable this safety guard
-- 3) or use SQLCMD
-----------------------------------------------------------------------
set NOEXEC OFF -- Reset in case it got stuck ON
set CONTEXT_INFO 0x1 -- A 'variable' that can pass batch boundaries
GO -- important !
if $(SQLCMDDBNAME) is not null
set CONTEXT_INFO 0x2 -- If above line worked, we're in SQLCMD mode
GO -- important !
if CONTEXT_INFO()<>0x2
begin
select 'F5 Pressed accidentally.'
SET NOEXEC ON -- skip rest of script
END
GO -- important !
-----------------------------------------------------------------------
< rest of script . . . . . >
GO
SET NOEXEC OFF
print 'DONE'