Important

Self-managed SingleStore will soon transition from version 9.1 RC to version 10. This new semantic versioning scheme will provide SingleStore with finer control over engine and feature releases that were not possible with the current versioning scheme.

In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10 prior to its general availability. Ahead of this transition, SingleStore 9.0 is recommended for production workloads, which can later be upgraded to SingleStore 10.

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 |
+------+------+---------------------------------+

PERCENT_RANK

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Syntax

Return Type

Examples

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