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FUNCTIONS / AGGREGATE FUNCTIONS

cume_dist

Read PG 18 manual ↗

Computes the cumulative distribution, that is (number of rows preceding or peers with hypothetical row) / (total rows).

Signatures & examples

cume_dist ( args ) WITHIN GROUP ( ORDER BY sorted_args ) → double precision
Computes the cumulative distribution, that is (number of rows preceding or peers with hypothetical row) / (total rows). The value thus ranges from 1/N to 1.
cume_dist () → double precision
Returns the cumulative distribution, that is (number of partition rows preceding or peers with current row) / (total partition rows). The value thus ranges from 1/N to 1.
Version history 2
  1. PG 12 → 13changed
  2. PG 9.3 → 9.4changed

Definition snapshot: 2026-09-14T13:14:25.684213+00:00@99e6866c · English manual source