drop temp table not take effect for SQL Server

Question

I had a query script in SQL server management studio which is as below:

if OBJECT_ID('tempdb..#temp') IS NOT NULL
  drop table #temp
select somecolumn into #temp from sometable where somecondition

if OBJECT_ID('tempdb..#temp') IS NOT NULL
  drop table #temp
select somecolumn2 into #temp from sometable2 where somecondition2

I add the drop table line to ensure the #temp table is cleaned from the cache. However, for repeated running the script, I still got error as "here is already an object named '#temp' in the database." in the second select line. It seems that the drop table didn't take effect as I wish.

Answer 1

if OBJECT_ID('tempdb..#temp') IS NOT NULL
  drop table #temp
select somecolumn into #temp from sometable where somecondition

GO   --<-- Separate these two block with a batch separator 

if OBJECT_ID('tempdb..#temp') IS NOT NULL
  drop table #temp
select somecolumn2 into #temp from sometable2 where somecondition2