ntile()The ntile() window function distributes the rows evenly into n groups.
SELECT ntile(3) OVER (ORDER BY …)
FROM …The example returns 1 for the first third of the rows, 2 for the second and 3 for the last.
Similar functions: width_bucket().
The ntile() window function is defined in ISO/IEC 9075:2016-2 as part of optional feature T614.
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