[Objects] dropping objects via code

The following code works in both SQL 2000 and SQL 2005.

Tables

if object_id('tempdb..#database_details') is not null
    DROP TABLE #database_details

Stored Procedures

IF EXISTS 
 (
 SELECT * FROM dbo.sysobjects 
 WHERE id = OBJECT_ID(N'[dbo].[the_procedure_name]') 
 AND OBJECTPROPERTY(id, N'IsProcedure') = 1
 )
DROP PROCEDURE the_procedure_name

Alternatively, the following code will CREATE a dummy SP if it doesn't exist, then ALTER it. This way you will only CREATE, not DROP, which can come in handy in certain circumstances, since it will save permissions. Note that this uses INFORMATION_SCHEMA, which is more portable than sysobjects.

IF NOT EXISTS 
 (
 SELECT * FROM INFORMATION_SCHEMA.ROUTINES 
 WHERE ROUTINE_NAME = 'the_routine_name' 
 and routine_type = 'PROCEDURE' --could also be 'FUNCTION' for a function
 )
        EXEC ('CREATE PROC dbo.the_procedure_name AS SELECT 1')
GO
ALTER PROCEDURE dbo.the_procedure_name
AS
SELECT  *
FROM    myTable