How To Handle Error In Sql Server 2008
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Sql Server Error Handling
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Sql Try Catch Throw
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) (Transact-SQL) GOTO (Transact-SQL)
Sql Server Try Catch Transaction
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 (starting with 2008)Azure SQL DatabaseAzure sql server stored procedure error handling best practices 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 generates a syntax error.A TRY…CATCH construct cannot span multiple batches.
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| Tags: Stored Procedures, SQL Server 2005, Transactions, SQL Server 2008 Features, Error Handling This article covers the basics of TRY CATCH error http://www.sqlteam.com/article/handling-sql-server-errors 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 sql server 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. in sql server 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