How to read the last row with SQL Server

Question

What is the most efficient way to read the last row with SQL Server?

The table is indexed on a unique key -- the \"bottom\" key values represent the last row.

Answer 1

If you have a Replicated table, you can have an Identity=1000 in localDatabase and Identity=2000 in the clientDatabase, so if you catch the last ID you may find always the last from client, not the last from the current connected database. So the best method which returns the last connected database is:

SELECT IDENT_CURRENT('tablename')