Question

How do I delete a temp table and ensure that its only for the current @@spid.

IF EXISTS
(
SELECT *
FROM tempdb.dbo.sysobjects
WHERE ID = OBJECT_ID(N'tempdb..#tmp')
)
BEGIN
DROP TABLE #tmp
END

Answer 1

A local #temp table is, by definition, only for the current spid session_id – so your query already does what you’re asking. This is probably a bit simpler though:

IF OBJECT_ID(N'tempdb..#tmp', 'U') IS NOT NULL
BEGIN
  DROP TABLE #tmp;
END

But what is the purpose of explicitly dropping this temp table? You know the parser won’t let you create another one with the same name in the same batch, right?