How to get nᵗʰ highest value using plain SQL

Question

What is the simplest way to get the n^th highest value from a result set using plain SQL?

The result set would be huge, thus need to consider performance too.

Answer 1

In Oracle:

SELECT * FROM (
  SELECT col1, ROW_NUMBER()OVER(ORDER BY col1) rnum_col1 FROM table1
) WHERE rnum_col1 = 10;