sp_addextendedproc (Transact-SQL)
Applies to: SQL Server
Registers the name of a new extended stored procedure to SQL Server.
Note
This feature will be removed in a future version of SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Use CLR Integration instead.
Transact-SQL syntax conventions
Syntax
sp_addextendedproc
[ @functname = ] N'functname'
, [ @dllname = ] 'dllname'
[ ; ]
Arguments
[ @functname = ] N'functname'
The name of the function to call within the dynamic-link library (DLL). @functname is nvarchar(517), with no default. @functname optionally can include the owner name in the form <owner.function>
.
[ @dllname = ] 'dllname'
The name of the DLL that contains the function. @dllname is varchar(255), with no default. You should specify the complete path of the DLL.
Return code values
0
(success) or 1
(failure).
Result set
None.
Remarks
After an extended stored procedure is created, it must be added to SQL Server by using sp_addextendedproc
. For more information, see Adding an Extended Stored Procedure to SQL Server.
This procedure can be run only in the master
database. To execute an extended stored procedure from a database other than master
, qualify the name of the extended stored procedure with master
.
sp_addextendedproc
adds entries to the sys.objects catalog view, registering the name of the new extended stored procedure with SQL Server. It also adds an entry in the sys.extended_procedures catalog view.
Important
Existing DLLs that aren't registered with a complete path don't work after upgrading to SQL Server. To correct the problem, use sp_dropextendedproc
to unregister the DLL, and then reregister it with sp_addextendedproc
, specifying the complete path.
Permissions
Only members of the sysadmin fixed server role can execute sp_addextendedproc
.
Examples
The following example adds the xp_hello
extended stored procedure.
USE master;
GO
EXEC sp_addextendedproc xp_hello, 'c:\xp_hello.dll';
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