sp_addextendedproc

Syntax

sp_addextendedproc esp_name, dll_name

esp_name – is the name of the extended stored procedure. This name must be identical to the name of the procedural language function that implements the ESP. esp_name must be a valid SAP ASE identifier.
dll_name – is the name of the dynamic link library (DLL) file containing the function specified by esp_name. The dll_name can be specified with no extension or with its platform-specific extension, such as .dll on Windows or .so on Solaris. If an extension is specified, the dll_name must be enclosed in quotation marks.

Example 1 – Registers an ESP for the function named my_esp, which is in the sqlsrvdll.dll file. The name of the resulting ESP database object is also my_esp:
```
sp_addextendedproc my_esp, "sqlsrvdll.dll"
```

There are additional considerations when using sp_addextendedproc:

Execute sp_addextendedproc from the master database.
You can only use sp_addextendedproc to add extended stored procedures that take no parameters. If your extended stored procedure requires a formal parameter list, you must use the create procedure command with the as external name option, together with the complete parameter list.
The esp_name is case sensitive. It must match the name of the function in the DLL.
The DLL represented by dll_name must reside on the server machine on which the ESP is being created and the DLL directory must be in:
- Windows – $PATH
- Compaq Tru64 – $LD_LIBRARY_PATH
- HP – $SH_LIBRARY_PATH
If the file is not found, the search mechanism also searches $SYBASE/dll on Windows and $SYBASE/lib on other platforms.
(On Windows) An ESP function should not call a C run-time signal routine. This can cause XP Server to fail, because Open Server™ does not support signal handling on Windows.

See also create procedure in Reference Manual: Commands.

The permission checks for sp_addextendedproc differ based on your granular permissions settings.

Setting	Description
Enabled	With granular permissions enabled, you must be a user with `manage any ESP` privilege.
Disabled	With granular permissions disabled, you must be a user with sa_role.

Values in event and extrainfo columns from the sysaudits table are:

Information	Values
Event	38
Audit option	exec_procedure
Command or access audited	Execution of a procedure
Information in `extrainfo`	Roles – Current active roles Keywords or options – NULL Previous value – NULL Current value – NULL Other information – All input parameters Proxy information – Original login name, if set proxy in effect