The cume_dist()
window function returns a relative measure (0-1) of where the current row is in the result according to the order by
clause.
SELECT cume_dist() OVER (ORDER BY …)
FROM …
Similar functions: row_number()
, rank()
, percent_rank()
.
The cume_dist()
window function is defined in ISO/IEC 9075:2016-2 as part of optional feature T612, “Advanced OLAP operations”.
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