Important

The SingleStore 9.1 release candidate (RC) is available now. It will be promoted to general availability (GA) soon and at that time it will be renamed to SingleStore 10.

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, while SingleStore 9.0 is recommended for production workloads.

RANK

Syntax

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

Return Type

An integer

Example

The following example demonstrates how the partition clause groups results and then rank is applied to those groups. Order by orders the results.

SQL

CREATE TABLE rank_t (a int, b int);

INSERT INTO rank_t VALUES(1,1), (1,2), (3,2), (3,3), (3,-4);

SQL

SELECT a,b, RANK() OVER (PARTITION BY a ORDER BY b) FROM rank_t;

+------+------+-----------------------------------------+
| a    | b    | RANK() OVER (PARTITION BY a ORDER BY b) |
+------+------+-----------------------------------------+
|    1 |    1 |                                       1 |
|    1 |    2 |                                       2 |
|    3 |   -4 |                                       1 |
|    3 |    2 |                                       2 |
|    3 |    3 |                                       3 |
+------+------+-----------------------------------------+