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SQL Server SELECT LAST N Rows

This is a known question but the best solution I've found is something like:

SELECT TOP N *
FROM MyTable
ORDER BY Id DESC

I've a table with lots of rows. It is not a posibility to use that query because it takes lot of time. So how can I do to select last N rows without using ORDER BY?

EDIT

Sorry duplicated question of this one

See Question&Answers more detail:os

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You can get SQL server to select the last N rows with the following query:

select * from tbl_name order by id desc limit N;

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