Returns the ID of the current SQL Data Warehouse or Parallel Data Warehouse session.
-- Azure SQL Data Warehouse and Parallel Data Warehouse SESSION_ID ( )
Returns an nvarchar(32) value.
The session ID is assigned to each user connection when the connection is made. It persists for the duration of the connection. When the connection ends, the session ID is released.
The session ID begins with the alphabetical characters 'SID'. These are case-sensitive and must be capitalized when session ID is used in SQL commands.
You can query the view sys.dm_pdw_exec_sessions to retrieve the same information as this function.
The following example returns the current session ID.