read last entry from data base

Hi..

I want to read ID of last entered data set from table, are there any
possible ways to it?
help Im stucked.....
thankx

try
Model.find(:last)

or:

User.find(:all, :order => 'id DESC', :limit=>1)

thankx guys

but

still there is a problem

User.find(:all, :order => ‘id DESC’, :limit=>1)

and

Model.find(:last)

both return “#” mark only. whats the reson? i want last index id

ok then say

lst_id = Model.find(:last).id
puts lst_id.inspect

hope 'll get this

as Model.find_last retunrns the entire last record

Thankx guys I got the answer…

WoW…

answer was

Model.maximum(“id”)

thank u again for ur help