Important

New database features are no longer connected to engine versions; features are now enabled independently during scheduled update windows, and “major” and “minor” releases no longer exist in Helios. Please visit the release notes to view the latest features available in your database clusters.

PERCENT_RANK

Syntax

PERCENT_RANK () OVER (
    [PARTITION BY (col | expr), ...]
    [ORDER BY (col | expr), ...]
)

Return Type

A DOUBLE data type.

Examples

SQL

CREATE TABLE pr_example (a int, b int);

INSERT INTO pr_example VALUES(1,2),(2,2),(3,3),(4,3);

SQL

SELECT a,b, PERCENT_RANK() OVER(ORDER BY a,b) FROM pr_example;

+------+------+-----------------------------------+
| a    | b    | percent_rank() over(order by a,b) |
+------+------+-----------------------------------+
|    1 |    2 |                                 0 |
|    2 |    2 |                0.3333333333333333 |
|    3 |    3 |                0.6666666666666666 |
|    4 |    3 |                                 1 |
+------+------+-----------------------------------+

SQL

SELECT a,b, PERCENT_RANK() OVER(ORDER BY b) FROM pr_example;

+------+------+---------------------------------+
| a    | b    | percent_rank() over(order by b) |
+------+------+---------------------------------+
|    1 |    2 |                               0 |
|    2 |    2 |                               0 |
|    3 |    3 |              0.6666666666666666 |
|    4 |    3 |              0.6666666666666666 |
+------+------+---------------------------------+