@@SPID (Transact-SQL)

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)

Returns the session ID of the current user process.

Transact-SQL syntax conventions

@@SPID  

smallint

@@SPID can be used to identify the current user process in the output of sp_who.

This example returns the session ID, login name, and user name for the current user process.

SELECT @@SPID AS 'ID', SYSTEM_USER AS 'Login Name', USER AS 'User Name';  

Here's the result set.

ID     Login Name                     User Name                       
------ ------------------------------ ------------------------------  
54     SEATTLE\joanna                 dbo                             

This example returns the Azure Synapse Analytics session ID, the SQL Server Control node session ID, login name, and user name for the current user process.

SELECT SESSION_ID() AS ID, @@SPID AS 'Control ID', SYSTEM_USER AS 'Login Name', USER AS 'User Name';  

Configuration Functions
sp_lock (Transact-SQL)
sp_who