DENSE_
Warning
SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.
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Returns the rank of the current row within the partition as specified by the order by clause.
If two or more rows tie they have the same ranking.
The difference between RANK and DENSE_ is that DENSE_ does not skip values after a tie.
Syntax
DENSE_RANK () OVER (
[PARTITION BY (col | expr), ...]
[ORDER BY (col | expr), ...]
)Return Type
Integer
Examples
CREATE TABLE dr_example (a int, b int);INSERT INTO dr_example VALUES(1,2),(2,2),(3,3),(4,3);
SELECT a,b, DENSE_RANK() OVER(ORDER BY b) FROM dr_example;
+------+------+-------------------------------+
| a | b | DENSE_RANK() OVER(ORDER BY b) |
+------+------+-------------------------------+
| 1 | 2 | 1 |
| 2 | 2 | 1 |
| 3 | 3 | 2 |
| 4 | 3 | 2 |
+------+------+-------------------------------+Last modified: February 16, 2023