I'm writing a SQL Server stored procedure in which I want to lock a table for update before executing the body of the stored procedure. I don't want to prevent other processes from reading the table, but I do want to prevent other processes updating the table.

Here is my first attempt:

CREATE PROCEDURE someProcedure
BEGIN
   SET TRANSACTION ISOLATION LEVEL READ COMITTED
   BEGIN TRANSANCTION
     SELECT COUNT(*) FROM TheTable WITH (UPDLOCK, TABLOCK)

     -- Pause procedure so that we can view the locks with sp_lock
     WAITFOR DELAY '00:15'

     -- Do stuff
   COMMIT
END

When I execute the stored procedure, and invoke sp_lock, I see that the table is indeed locked. However, it's locked with an Exclusive lock instead of an update lock:

spid | dbid | ObjId     | IndId | Type | Resource | Mode | Status
------------------------------------------------------------------
63   | 10   | 233208031 | 0     | TAB  |          | X    | GRANT

How can I get an update (U) lock instead?