--下面以临时表#temp为例，判断它是否存在，存在就删除它
IF OBJECT_ID('tempdb..#temp') is not null
drop table #temp
--方法一
1if exists (select * from tempdb.dbo.sysobjects where id = object_id(N'tempdb..#tempcitys') and type='U')2 drop table #tempcitys
--方法二
if object_id('tempdb..#tem') is not null
begin
print 'exists'
end
else
begin
print 'not exists'
end
