Error Handling In Sql Stored Procedure
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Sql Stored Procedure Try Catch
ISV Startups TechRewards Events Community Magazine Forums Blogs Channel try catch in stored procedure 9 Documentation APIs and reference Dev centers Retired content Samples We’re sorry. The content you try catch in sql server 2008 stored procedure example requested has been removed. You’ll be auto redirected in 1 second. Microsoft SQL Server Language Reference Transact-SQL Reference (Database Engine) Control-of-Flow Language (Transact-SQL) Control-of-Flow
Try Catch Stored Procedure Sql Server 2012
Language (Transact-SQL) TRY...CATCH (Transact-SQL) TRY...CATCH (Transact-SQL) TRY...CATCH (Transact-SQL) BEGIN...END (Transact-SQL) BREAK (Transact-SQL) CONTINUE (Transact-SQL) ELSE (IF...ELSE) (Transact-SQL) END (BEGIN...END) (Transact-SQL) GOTO (Transact-SQL) IF...ELSE (Transact-SQL) RETURN (Transact-SQL) THROW (Transact-SQL) TRY...CATCH (Transact-SQL) WAITFOR (Transact-SQL) WHILE (Transact-SQL) TOC Collapse the table of content Expand the table of content This documentation is
Sql 2005 Stored Procedure Error Handling
archived and is not being maintained. This documentation is archived and is not being maintained. TRY...CATCH (Transact-SQL) Other Versions SQL Server 2012 THIS TOPIC APPLIES TO: SQL Server (starting with 2008)Azure SQL DatabaseAzure SQL Data Warehouse Parallel Data Warehouse Implements error handling for Transact-SQL that is similar to the exception handling in the Microsoft Visual C# and Microsoft Visual C++ languages. A group of Transact-SQL statements can be enclosed in a TRY block. If an error occurs in the TRY block, control is passed to another group of statements that is enclosed in a CATCH block. Transact-SQL Syntax ConventionsSyntax Copy -- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse BEGIN TRY { sql_statement | statement_block } END TRY BEGIN CATCH [ { sql_statement | statement_block } ] END CATCH [ ; ] Argumentssql_statement Is any Transact-SQL statem
how you should implement error handling when you write stored procedures, including when you call them from ADO. The other article, Error Handling in SQL Server - a Background, gives mysql stored procedure error handling a deeper description of the idiosyncrasies with error handling in SQL Server and
Sql Function Error Handling
ADO. That article is in some sense part one in the series. However, you can read this article without reading oracle stored procedure error handling the background article first, and if you are not a very experienced user of SQL Server, I recommend you to start here. In places there are links to the background article, if you want https://msdn.microsoft.com/en-us/library/ms175976.aspx more information about a certain issue. Note: this article is aimed at SQL2000 and earlier versions of SQL Server. SQL2005 offers significantly improved methods for error handling with TRY-CATCH. This article is not apt if you are using SQL 2005 or later. I don't have a complete article on error handling for SQL 2005, but I have an unfinished article with a section Jumpstart Error Handling that still http://www.sommarskog.se/error-handling-II.html can be useful. Table of Contents: Introduction The Presumptions A General Example Checking Calls to Stored Procedures The Philosophy of Error Handling General Requirements Why Do We Check for Errors? When Should You Check @@error? ROLLBACK or not to ROLLBACK - That's the Question SET XACT_ABORT ON revisited Error Handling with Cursors Error Handling with Triggers Error Handling with User-Defined Functions Error Handling with Dynamic SQL Error Handling in Client Code What to Do in Case of an Error? Command Timeouts Why is My Error Not Raised? Getting the Return Value from a Stored Procedure Acknowledgements and Feedback Revision History Introduction Error handling in stored procedures is a very tedious task, because T-SQL offers no exception mechanism, or any On Error Goto. All you have is the global variable @@error which you need to check after each statement for a non-zero value to be perfectly safe. If you call a stored procedure, you also need to check the return value from the procedure. In fact, this is so extremely tedious, so you will find that you will have to make compromises and in some situations assume that nothing can go wrong. Still, you cannot just ignore checking for errors, because
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company http://stackoverflow.com/questions/725891/what-is-the-best-practice-use-of-sql-server-t-sql-error-handling Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, http://dba.stackexchange.com/questions/34275/handling-exceptions-in-stored-procedures-called-using-insert-exec-blocks just like you, helping each other. Join them; it only takes a minute: Sign up What is the best practice use of SQL Server T-SQL error handling? up vote 20 down vote favorite 12 We have a stored procedure large application mainly written in SQL Server 7.0, where all database calls are to stored procedures. We are now running SQL Server 2005, which offers more T-SQL features. After just about every SELECT, INSERT, UPDATE, and DELETE, the @@ROWCOUNT and @@ERROR get captured into local variables and evaluated for problems. If there is a problem the following is done: error message output parameter is set rollback (if necessary) is done info is written (INSERT) sql stored procedure to log table return with a error number, unique to this procedure (positive if fatal, negative is warning) They all don't check the rows (only when it is known) and some differ with more or less log/debug info. Also, the rows logic is somethimes split from the error logic (on updates where a concurrency field is checked in the WHERE clause, rows=0 means someone else has updated the data). However, here is a fairly generic example: SELECT, INSERT, UPDATE, or DELETE SELECT @Error=@@ERROR, @Rows=@@ROWCOUNT IF @Rows!=1 OR @Error!=0 BEGIN SET @ErrorMsg='ERROR 20, ' + ISNULL(OBJECT_NAME(@@PROCID), 'unknown') + ' - unable to ???????? the ????.' IF @@TRANCOUNT >0 BEGIN ROLLBACK END SET @LogInfo=ISNULL(@LogInfo,'')+'; '+ISNULL(@ErrorMsg,'')+ + ' @YYYYY=' +dbo.FormatString(@YYYYY) +', @XXXXX=' +dbo.FormatString(@XXXXX) +', Error=' +dbo.FormatString(@Error) +', Rows=' +dbo.FormatString(@Rows) INSERT INTO MyLogTable (...,Message) VALUES (....,@LogInfo) RETURN 20 END I am looking into replacing how we do this with the TRY-CATCH T-SQL. I've read about the TRY...CATCH (Transact-SQL) syntax, so don't just post some summary of that. I'm looking for any good ideas and how best to do or improve our error handling methods. It doesn't have to be Try-Catch, just any good or best practice use of T-SQL error handling. sql-server sql-server-2005 tsql error-handling share|improve this question edited Sep 5 '13 at 8:33 SteveC 4,025135097 asked Apr 7 '09 at 14:02 KM. 67.4k2312
log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Handling exceptions in stored procedures called using insert-exec blocks up vote 9 down vote favorite I have a stored procedure that is called in an insert-exec block: insert into @t exec('test') How can I handle exceptions generated in the stored procedure and still continue processing? The following code illustrates the problem. What I want to do is return 0 or -1 depending on the success or failure of the internal exec() call: alter procedure test -- or create as begin try declare @retval int; -- This code assumes that PrintMax exists already so this generates an error exec('create procedure PrintMax as begin print ''hello world'' end;') set @retval = 0; select @retval; return(@retval); end try begin catch -- if @@TRANCOUNT > 0 commit; print ERROR_MESSAGE(); set @retval = -1; select @retval; return(@retval); end catch; go declare @t table (i int); insert into @t exec('test'); select * from @t; My problem is the return(-1). The success path is fine. If I leave out the try/catch block in the stored procedure, then the error is raised and the insert fails. However, what I want to do is to handle the error and return a nice value. The code as is returns the message: Msg 3930, Level 16, State 1, Line 6 The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction. This is perhaps the worst error message I've encountered. It seems to really mean "You did not handle an error in a nested transaction." If I put in the if @@TRANCOUNT > 0, then