Functions / Aggregate Functions

cume_dist

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

Reading PG 18current·documented in 19 of 27 versions, 8.4 to 20

7.1 7.2 7.3 7.4 8.0 8.1 8.2 8.3 8.4 9.0 9.1 9.2 9.3 9.4 9.5 9.6 10 11 12 13 14 15 16 17 18 19 20

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 3

12 → 13 changed
9.3 → 9.4 changed
8.3 → 8.4 added

Definition snapshot: b7bd9cda · English manual source