In Oracle functions we can use Exception handling in the following way
EXCEPTION
WHEN OTHERS THEN
// do some error handling
RETURN NULL;
(Then END for function end -- also function return value returned before the exception part)
Now to execute the same thing in sql server.. we have try and catch logic
How can I mention a condition that will work as 'WHEN OTHERS THEN' as in oracle in sql server.
In oracle 'WHEN OTHERS THEN' catches all other exceptions than the one's mentioned excplicitly
Is there a way to catch all exceptions in this way in sql server
Thanks for the help!
Use TRY CATCH as follows
BEGIN TRY
-- statements that may cause exceptions
END TRY
BEGIN CATCH
-- statements that handle exception
END CATCH
Case Statement and IIF should help
Related
A Java Hibernate application call my stored procedure in SQL Server 2019, through JDBC
The stored procedure has a begin/catch block
Despite I catch the error, the error is reported back to Java as an Exception
and then the application finishes with an error
From the database (and business) point of view, the error was caught, and everything is fine
I need Java application to not trigger an exception, since the error was correctly treated by the stored procedure
Is there any configuration or something (in the SP) I can add?
NOTE: I'm on the DB side, the Java code is not in my scope, it can't be modified
ADDED
I mean, whatever kind of error, for example:
CREATE PROCEDURE SP_TEST
AS
BEGIN TRY
SELECT 1/0 as x
PRINT 'no problem'
END TRY
BEGIN CATCH
SELECT 1 as x
PRINT 'don´t pay attention'
END CATCH
PRINT 'good bye'
return 0 -- always 0 = OK
Despite the error was managed by the Stored Procedure
in some way the client application receives it
I really don't know if it is normal to the driver or the Engine
I have one SQL Server instance accessed by many different applications.
Sometimes happened that one of such application throw the exception : "String or binary data would be truncated".
My objective is to trace (logging) when that error happen, and trace down which application has encountered the problem on which field.
I have no access to every application's code, so my first idea is to develop a solution directly in the SQL Server, but i don't know how can i check if that problem is occured and on which field.
but i don't know how can i check if that problem is occured and on which field.
even SQL server won't tell you on which field it occurred.There is a connect item ,which has been logged for the same
https://connect.microsoft.com/SQLServer/feedback/details/339410/please-fix-the-string-or-binary-data-would-be-truncated-message-to-give-the-column-name
But you can catch those errors,with a simple try catch and log them
create table #t1
(
charcol char(1)
)
begin try
insert into #t1
values
('a'),
('aa')
end try
begin catch
select error_message()
end catch
This is fixed in Recent versions of SQLServer..Now you will be able to know the exact column
Msg 2628, Level 16, State 1, Line 9
String or binary data would be truncated in
table 'StackOverflow2013.dbo.CoolPeople', column 'PrimaryCar'.
Truncated value: '2006 Subaru Impreza '.
This works in SQL Server 2019 if you enable database scoped settings like below
ALTER DATABASE SCOPED CONFIGURATION
SET VERBOSE_TRUNCATION_WARNINGS = ON;
you have to turn traceflag 460 for SQL Server 2016-2017
References and Examples:
https://www.brentozar.com/archive/2019/03/how-to-fix-the-error-string-or-binary-data-would-be-truncated/
This has been asked many times, but the top rated answer doesn't work.
BEGIN TRY
USE [**DATABASE**]
END TRY
BEGIN CATCH
set noexec on
raiserror('Oh no a fatal error', 20, -1) with log
return
END CATCH
GO
IF EXISTS (SELECT * FROM sys.check_constraints WHERE object_id = OBJECT_ID(N'[dbo].[xxxxx]') AND parent_object_id = OBJECT_ID(N'[dbo].[xxxxxx]'))
ALTER TABLE [dbo].[xxxxx] DROP CONSTRAINT [xxxxxx]
GO
Seems like no matter what I do that IF EXISTS still runs. I've tried GOTO. I've tried set noexec on. I've tried RETURN.
It definitely fails on the USE statement and it definitely continues to run the next block after the first GO.
The point here is that I'm giving this script to other people and they must set the database name before running it. But they'll forget so I need a nice descriptive error message.
How about:
IF db_id('myDatabase') is null
RAISERROR('Oh no a fatal error', 20, -1) with log
PRINT 'Do some stuff'
GO
You can use a parameter (#MyDB) in the db_id function call.
The real question to me is why:
The "USE a non-existent database" command raises a severity 16 error
The code in the CATCH block attempts to raise a severity 20 error
But the CATCH block only raises a severity 16 error
Why is that?
-- Edited ----------------
BOL for the USE statements says (not too clearly, imho):
USE is executed at both compile and execution time and takes effect
immediately. Therefore, statements that appear in a batch after the
USE statement are executed in the specified database.
So, presuming here, that error is generated at compile time, so that first "batch" (before the first go) does not get run, and execution jumps straight to the second batch.
Short and easy question for the likes of you guys, I'm sure...
I have a stored proc that takes in a variable #iLevel. I want to make sure that #iLevel is always lower than 5.
If it is >= 5, I want to immediately return an empty result set.
I have
IF #iLelel >= 5
RETURN
ELSE
BEGIN
--all my good processing stuff
This however just returns nothing. I would like to have an empty resultset sent back.
How do you do this in SQL Server?
Thanks in advance!
EDIT:
I am running the stored proc within SQL Server, and right now, if I run it with my var being lower than 5, I see the result in the messages window. All column names etc. If I run it with my var being 5 or more, the messages window just says, 'Command(s) completed successfully'.
I'm thinking that I would at least want an empty result sent back, not just void.
Could be I'm wrong... Can you tell how new this is to me?
Thanks again!
CREATE PROCEDURE usp_MyProc
#iLelel INT
AS
BEGIN
SET NOCOUNT ON;
BEGIN TRY
-- before you do anything do your test here
IF (#iLelel >= 5)
BEGIN
RAISERROR('Value out of range, greater than 5 blabla',16,1)
END
-- any code here will only be executed if passed the above test
-- all of the good stuff here
END TRY
BEGIN CATCH
-- Error handling here
-- Log error do what ever you want to do
END CATCH
END
I am trying to execute the following code:
THROW 51051, 'I come from the THROW construct :)', 1 ;
The error I am getting is:
Could not find stored procedure 'THROW'.
Isn't the THROW procedure a sytem procedure? Why can't it find it?
Furthhermore, what is the difference between unsing THROW and ErrorState ? Is one older/newer/better than the other?
And what do "ErrorSeverity" and "ErrorState" mean by ErrorState? Can I define them as I will or they are predefined?
According to the Differences Between RAISERROR and THROW in Sql Server:
Both RAISERROR and THROW statements are used to raise an error in Sql Server.
The journey of RAISERROR started from Sql Server 7.0; whereas the journey of the THROW statement has just begun with Sql Server 2012.
Microsoft is suggesting we start using the THROW statement instead of RAISERROR. The THROW statement seems to be simpler and easier to use than RAISERROR.
Yes, it is, but only since 2012. If you're using 2008R2, then it didn't exist.
The definitions of state and severity are clearly documented in the raiserror documentation