Error Handling In Sql Stored Procedures 2008
Contents |
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and error handling in stored procedure sql server 2008 reference Dev centers Retired content Samples We’re sorry. The content you requested
T Sql Error Handling Stored Procedures
has been removed. You’ll be auto redirected in 1 second. Microsoft SQL Server Language Reference Transact-SQL Reference (Database Engine) exception handling in sql server 2008 stored procedure Control-of-Flow Language (Transact-SQL) Control-of-Flow 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)
Mysql Stored Procedure Error Handling
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 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 oracle stored procedure error handling 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 statement.statement_block Any group of Transact-SQL statements in a batch or enclosed in a BEGIN…END block.RemarksA TRY…CATCH construct catches all execution errors that have a severity higher than 10 that do not close the database connection.A TRY block must be immediately followed by an associated CATCH block. Including any other statements between the END TRY and BEGIN CATCH statements generates a syntax error.A TRY…CATCH construct cannot span multiple batches. A TRY…CATCH construct cannot span multiple blocks of Transact-SQL statements. For ex
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
Sql Stored Procedure Try Catch
this site About Us Learn more about Stack Overflow the company Business Learn
Sql Trigger Error Handling
more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question sql function error handling x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up https://msdn.microsoft.com/en-us/library/ms175976.aspx Error Handling in SQL Server Stored Procedures up vote 2 down vote favorite I have a fairly complex SP (logic wise) with nested IF BEGIN END ELSE, there are multiple end points in this nested logic where the logic fails and I RAISERROR and two places that result in success and SQL being actioned. How, at the end of the SP can I trap http://stackoverflow.com/questions/12403221/error-handling-in-sql-server-stored-procedures the errors and do a IF Error Count>0 THEN ROLLBACK DECLARE @errCount int=0 DECLARE @DataSetCount int=0 DECLARE @countCurrent int=0 DECLARE @countHistorical int=0 IF (isnumeric(@DataSetID)=(0) OR @DataSetID=(0)) BEGIN RAISERROR('The DataSet specfied does not appear to be valid', 5, 1) END ELSE IF (@Destination='C' OR @Destination='H') BEGIN if Exists (SELECT NULL from tblOpportunityDataSets where DataSetID=@DataSetID) BEGIN SET @countCurrent=(SELECT COUNT(1) from tblOptyRecordsCurrent where DataSetID=@DataSetID) SET @countHistorical=(SELECT COUNT(1) from tblOptyRecordsHistorical where DataSetID=@DataSetID) IF @destination='C' BEGIN if @countCurrent>0 BEGIN RAISERROR('There are already existing records in the Current Tables for the specified DataSet', 5, 1) END ELSE if @countHistorical=0 BEGIN RAISERROR('There do not appear to be any records in the Historical Tables to transfer for the specified Dataset', 5, 1) END ELSE BEGIN -- ENTER TRANSFER CODE INSERT INTO tblRecordsHistorical ( X, Y, Z ) SELECT X, Y, Z FROM tblA WHERE x=y -- Check that record count in both tables match SET @countCurrent=(SELECT COUNT(1) from tblOptyRecordsCurrent where DataSetID=@DataSetID) SET @countHistorical=(SELECT COUNT(1) from tblOptyRecordsHistorical where DataSetID=@DataSetID) IF (@countCurrent<>@countHistorical) BEGIN RAISERROR('There was an error whilst copying the records into the Historical Tables, Source and Destination Record Count do not match', 5, 1) END ELSE
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 a deeper description of the idiosyncrasies with error handling http://www.sommarskog.se/error-handling-II.html in SQL Server and ADO. That article is in some sense part one in the http://www.sqlteam.com/article/handling-sql-server-errors series. However, you can read this article without reading 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 more information about a certain issue. Note: this article is aimed at SQL2000 and earlier versions of SQL Server. error handling 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 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 sql stored procedure 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 ignoring an error could cause your updates to be incomplete, and compromise the integrity of your data. Or it can cause a transaction to run for much longer time than intended, leading to blocking and risk that the user loses all his updates when he logs out. In the first section, I summarize the most importa
| Tags: Stored Procedures, SQL Server 2005, Transactions, SQL Server 2008 Features, Error Handling This article covers the basics of TRY CATCH error handling in T-SQL introduced in SQL Server 2005. It includes the usage of common functions to return information about the error and using the TRY CATCH block in stored procedures and transactions. SQL Server uses the following syntax to capture errors in Transact-SQL statements: BEGIN TRY SELECT [First] = 1 SELECT [Second] = 1/0 SELECT [Third] = 3 END TRY BEGIN CATCH PRINT 'An error occurred' END CATCH This returns the following output: First ----------- 1 (1 row(s) affected) Second ----------- (0 row(s) affected) An error occurred A key difference from SQL Server 2000 is that execution is halted when SQL Server encounters an error. At that point execution transfers to the CATCH block. This error isn't returned to the client application or calling program. The TRY CATCH block consumes the error. Error Functions Inside the CATCH block there are a number of specialized functions to return information about the error. BEGIN TRY SELECT [Second] = 1/0 END TRY BEGIN CATCH SELECT [Error_Line] = ERROR_LINE(), [Error_Number] = ERROR_NUMBER(), [Error_Severity] = ERROR_SEVERITY(), [Error_State] = ERROR_STATE() SELECT [Error_Message] = ERROR_MESSAGE() END CATCH Second ----------- (0 row(s) affected) Error_Line Error_Number Error_Severity Error_State ----------- ------------ -------------- ----------- 2 8134 16 1 (1 row(s) affected) Error_Message --------------------------------------------------- Divide by zero error encountered. (1 row(s) affected) These are the functions you can use inside a CATCH block. These functions all return NULL if they are called from outside a CATCH block. ERROR_NUMBER. The number of the error that occurred. This is similar to @@ERROR except that it will return the same number for the duration of the CATCH block. ERROR_MESSAGE. The complete text of the error message including any substiture parameters such as object names. ERROR_LINE. This is the line number of the batch or stored procedure where the error occured. ERROR_SEVERITY. This is the severity of the error. The CATCH block only fires for errors with severity 11 or higher. Error severities from 11 to 16 are typically user or code errors. Severity levels from 17 to 25 are usually software or hardware errors where processing may not be able to continue. ERROR_STATE. Thi