error-number-transact-sql.md

title	ERROR_NUMBER (Transact-SQL) | Microsoft Docs
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ERROR_NUMBER (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-all-md]

Returns the error number of the error that caused the CATCH block of a TRY…CATCH construct to be run.

Transact-SQL Syntax Conventions

Syntax

ERROR_NUMBER ( )  

Return Types

int

Return Value

When called in a CATCH block, returns the error number of the error message that caused the CATCH block to be run.

Returns NULL if called outside the scope of a CATCH block.

Remarks

This function may be called anywhere within the scope of a CATCH block.

ERROR_NUMBER returns the error number regardless of how many times it is run, or where it is run within the scope of the CATCH block. This is in contrast to @@ERROR, which only returns the error number in the statement immediately after the one that causes an error, or the first statement of a CATCH block.

In nested CATCH blocks, ERROR_NUMBER returns the error number specific to the scope of the CATCH block in which it is referenced. For example, the CATCH block of an outer TRY...CATCH construct could have a nested TRY...CATCH construct. Within the nested CATCH block, ERROR_NUMBER returns the number from the error that invoked the nested CATCH block. If ERROR_NUMBER is run in the outer CATCH block, it returns the number from the error that invoked that CATCH block.

Examples

A. Using ERROR_NUMBER in a CATCH block

The following code example shows a SELECT statement that generates a divide-by-zero error. The number of the error is returned.

BEGIN TRY  
    -- Generate a divide-by-zero error.  
    SELECT 1/0;  
END TRY  
BEGIN CATCH  
    SELECT ERROR_NUMBER() AS ErrorNumber;  
END CATCH;  
GO  

B. Using ERROR_NUMBER in a CATCH block with other error-handling tools

The following code example shows a SELECT statement that generates a divide-by-zero error. Along with the error number, information that relates to the error is returned.

  
BEGIN TRY  
    -- Generate a divide-by-zero error.  
    SELECT 1/0;  
END TRY  
BEGIN CATCH  
    SELECT  
        ERROR_NUMBER() AS ErrorNumber,  
        ERROR_SEVERITY() AS ErrorSeverity,  
        ERROR_STATE() AS ErrorState,  
        ERROR_PROCEDURE() AS ErrorProcedure,  
        ERROR_LINE() AS ErrorLine,  
        ERROR_MESSAGE() AS ErrorMessage;  
END CATCH;  
GO  

Examples: [!INCLUDEssSDWfull] and [!INCLUDEssPDW]

C. Using ERROR_NUMBER in a CATCH block with other error-handling tools

The following code example shows a SELECT statement that generates a divide-by-zero error. Along with the error number, information that relates to the error is returned.

  
BEGIN TRY  
    -- Generate a divide-by-zero error.  
    SELECT 1/0;  
END TRY  
BEGIN CATCH  
    SELECT  
        ERROR_NUMBER() AS ErrorNumber,  
        ERROR_SEVERITY() AS ErrorSeverity,  
        ERROR_STATE() AS ErrorState,  
        ERROR_PROCEDURE() AS ErrorProcedure,  
        ERROR_MESSAGE() AS ErrorMessage;  
END CATCH;  
GO  

See Also

sys.messages (Transact-SQL)
TRY...CATCH (Transact-SQL)
ERROR_LINE (Transact-SQL)
ERROR_MESSAGE (Transact-SQL)
ERROR_PROCEDURE (Transact-SQL)
ERROR_SEVERITY (Transact-SQL)
ERROR_STATE (Transact-SQL)
RAISERROR (Transact-SQL)
@@ERROR (Transact-SQL)