How to create fast database queries

Archive for March 9th, 2009

Analytic functions: NTILE

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In the previous article we dealt with analytic functions SUM, AVG and ROW_NUMBER().

Now we will try to emulate NTILE.

NTILE(N) is a special function that has no aggregate analog. It divides each grouping set of rows into N subranges, based on ORDER BY clause, and returns the subrange number for each row.
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Written by Quassnoi

March 9th, 2009 at 11:00 pm

Posted in MySQL