ERROR_NUMBER (Transact-SQL)
Applies to:
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
SQL analytics endpoint in Microsoft Fabric
Warehouse in Microsoft Fabric
This function returns the error number of the error that caused the CATCH block of a TRY...CATCH construct to execute.
Transact-SQL syntax conventions
Syntax
ERROR_NUMBER ( )
Note
To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation.
Return Types
int
Return Value
When called in a CATCH block, ERROR_NUMBER
returns the error number of the error that caused the CATCH block to run.
ERROR_NUMBER
returns NULL when called outside the scope of a CATCH block.
Remarks
ERROR_NUMBER
supports calls anywhere within the scope of a CATCH block.
ERROR_NUMBER
returns a relevant error number regardless of how many times it runs, or where it runs within the scope of the CATCH
block. This contrasts with a function like @@ERROR, which only returns an error number in the statement immediately following the one that causes an error.
In a nested CATCH
block, ERROR_NUMBER
returns the error number specific to the scope of the CATCH
block that referenced that CATCH
block. For example, the CATCH
block of an outer TRY...CATCH construct could have an inner TRY...CATCH
construct. Inside that inner CATCH
block, ERROR_NUMBER
returns the number of the error that invoked the inner CATCH
block. If ERROR_NUMBER
runs in the outer CATCH
block, it returns the number of the error that invoked that outer CATCH
block.
Examples
A. Using ERROR_NUMBER in a CATCH block
This example shows a SELECT
statement that generates a divide-by-zero error. The CATCH
block returns the error number.
BEGIN TRY
-- Generate a divide-by-zero error.
SELECT 1/0;
END TRY
BEGIN CATCH
SELECT ERROR_NUMBER() AS ErrorNumber;
END CATCH;
GO
Here is the result set.
-----------
(0 row(s) affected)
ErrorNumber
-----------
8134
(1 row(s) affected)
B. Using ERROR_NUMBER in a CATCH block with other error-handling tools
This example shows a SELECT
statement that generates a divide-by-zero error. Along with the error number, the CATCH
block returns information about that error.
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
Here is the result set.
-----------
(0 row(s) affected)
ErrorNumber ErrorSeverity ErrorState ErrorProcedure ErrorLine ErrorMessage
----------- ------------- ----------- --------------- ---------- ----------------------------------
8134 16 1 NULL 4 Divide by zero error encountered.
(1 row(s) affected)
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)
Errors and Events Reference (Database Engine)