sp_dropextendedproc (Transact-SQL)

THIS TOPIC APPLIES TO:yesSQL Server (starting with 2008)noAzure SQL DatabasenoAzure SQL Data Warehouse noParallel Data Warehouse

Drops an extended stored procedure.


This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Use CLR Integration instead.

|Applies to: SQL Server ( SQL Server 2008 through current version).|

Topic link icon Transact-SQL Syntax Conventions


sp_dropextendedproc [ @functname = ] 'procedure'   


[ @functname =] 'procedure'
Is the name of the extended stored procedure to drop. procedure is nvarchar(517), with no default.

Return Code Values

0 (success) or 1 (failure)

Result Sets



Executing sp_dropextendedproc drops the user-defined extended stored procedure name from the sys.objects catalog view and removes the entry from the sys.extended_procedures catalog view. This stored procedure can be run only in the master database.

In SQL Server 2017sp_dropextendedproc does not drop system extended stored procedures. Instead, the system administrator should deny EXECUTE permission on the extended stored procedure to the public role.

sp_dropextendedproc cannot be executed inside a transaction.


Only members of the sysadmin fixed server role can execute sp_dropextendedproc.


The following example drops the xp_hello extended stored procedure.


This extended stored procedure must already exist, or the example will return an error message.

USE master;  
EXEC sp_dropextendedproc 'xp_hello';  

See Also

sp_addextendedproc (Transact-SQL)
sp_helpextendedproc (Transact-SQL)
System Stored Procedures (Transact-SQL)