How To Get Error Message In Sql Server Stored Procedure
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Language Reference Transact-SQL Reference (Database Engine) 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) https://support.microsoft.com/en-us/kb/321903 (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 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 https://msdn.microsoft.com/en-us/library/ms175976.aspx (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 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
United States Australia United Kingdom Japan Newsletters Forums Resource Library Tech Pro Free Trial Membership Membership My Profile People Subscriptions My stuff Preferences Send a message Log Out TechRepublic Search GO Topics: CXO Cloud Big Data Security Innovation Software Data Centers Networking Startups http://www.techrepublic.com/article/get-a-handle-on-errors-in-sql-server-stored-procedures/ Tech & Work All Topics Sections: Photos Videos All Writers Newsletters Forums Resource Library Tech http://rwgarrison.com/rg/Writing/ErrorCheckingPart1.htm Pro Free Trial Editions: US United States Australia United Kingdom Japan Membership Membership My Profile People Subscriptions My stuff Preferences Send a message Log Out Data Management Get a handle on errors in SQL Server stored procedures Error handling in SQL Server stored procedures is not difficult, but it may be different from what you're used to. Pick up the basics stored procedure and a general strategy in this article. By Lamont Adams | July 19, 2002, 12:00 AM PST RSS Comments Facebook Linkedin Twitter More Email Print Reddit Delicious Digg Pinterest Stumbleupon Google Plus The idea of "error handling" in a SQL Server stored procedure is something of a misnomer—in most cases, your only responsibility is to return an error to the client, which the access provider usually can do on its own. But it's useful to know when sql server stored an error occurs during the execution of T-SQL code and what variety of error it was. In this article, I'll introduce you to the basics of detecting and dealing with errors in your SQL Server stored procedures.You're in errorSQL Server has somewhere in the neighborhood of 3,800 predefined error codes, which are maintained in the master catalog's sysmessages table. Each error code has a corresponding severity level, which serves as a rough indication of just how bad an error is. Severity levels range from zero to 25. Everything above 20 qualifies as a fatal error, which basically means that the offending stored procedure is immediately terminated when the error occurs, and any connection with the client must be reinitialized. Nonfatal errors simply prevent the offending line from executing, and the procedure will continue with the next line. All error codes also have a matching text description.So, what can you do with this information now that you have it? Not much, I'm afraid, since the only information you can access in a procedure when an error occurs is the error number, obtainable through the @@ERROR system function. However, you can look up the actual error message and severity in the sysmessages table—unless, of course, your code just experienced a fatal error.Error-handling basicsLet's assume you have a table called NoNullsAllowed with two fields, Field1 and Field2. Both fields, as y
of detail that you can build into your stored procedures. You can choose the level of detail appropriate for your situation. Let's get right to the examples. (Note that all examples use Northwind tables and that we're focusing here on errors, so all tests are for failure cases.) Compatibility: All code works on both SQL Server 2000 and SQL Server 2005 Beta 2. It does not leverage any SQL Server 2005 features. Level Zero - No Detection, No Reporting CREATE PROCEDURE dbo.CreateRegion0 ( @RegionID int, @RegionDescription nchar(50) ) AS BEGIN SET NOCOUNT ON INSERT INTO dbo.Region ( RegionID, RegionDescription ) VALUES ( @RegionID, @RegionDescription ) END GO Procedure CreateRegion0 includes no error detection or reporting. If we execute this with a RegionID that already exists, DECLARE @rtnVal int EXEC @rtnVal = dbo.CreateRegion0 @RegionID = 2, @RegionDescription = N'Western' we get this error Server: Msg 2627, Level 14, State 1, Procedure SPTest_CreateRegion0, Line 9 Violation of PRIMARY KEY constraint 'PK_Region'. Cannot insert duplicate key in object 'Region'. The statement has been terminated. and @rtnVal is -4. The error from SQL Server is quite helpful but does not give any details. Level One - Error Detection with Minimal Reporting CREATE PROCEDURE dbo.CreateRegion1 ( @RegionID int, @RegionDescription nchar(50) ) AS BEGIN SET NOCOUNT ON DECLARE @error int DECLARE @rowcount int INSERT INTO dbo.Region ( RegionID, RegionDescription ) VALUES ( @RegionID, @RegionDescription ) SELECT @error = @@error, @rowcount = @@rowcount IF @error <> 0 BEGIN RAISERROR('Error %d inserting into Region', 10, 1, @error) RETURN(@error) END ELSE IF @rowcount <> 1 BEGIN RAISERROR('Rowcount %d inserting into Region', 10, 1, @rowcount) WITH SETERROR RETURN(@@error) END RETURN(0) END GO Procedure CreateRegion1 includes error detection and minimal reporting through in-line RAISERROR calls. If we execute this with a RegionID that already exists, DECLARE @rtnVal int EXEC @rtnVal = dbo.CreateRegion1 @RegionID = 2, @RegionDescription = N'Western' we get this error Server: Msg 2627, Level 14, State 1, Procedure SPTest_CreateRegion1, Line 12 Violation of PRIMARY KEY constraint 'PK_Region'. Cannot insert duplicate key in object 'Region'. The statement has been terminated. Error 2627 inserting into Region and @rtn