ROW_NUMBER()

Overview

This window function returns the row number of the current row within its partition. Row number ranges from 1 to number of rows in the partition.

See also: Functions in 10.6 ES, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS

EXAMPLES

CREATE TABLE t1 (a INT, b INT);

INSERT INTO t1 VALUES
  (1,3), (1,5), (8,2), (5,7), (5,6),
  (10,1), (6,4), (3,9), (3,9), (7,2),
  (7,5), (2,6), (9,10), (9,5), (4,8);

SELECT a, b,
   ROW_NUMBER() OVER w AS 'row_number',
   RANK() OVER w AS 'rank',
   DENSE_RANK() OVER w AS 'dense_rank'
FROM t1
WINDOW w AS (ORDER BY a, b);

+------+------+------------+------+------------+
| a    | b    | row_number | rank | dense_rank |
+------+------+------------+------+------------+
|    1 |    3 |          1 |    1 |          1 |
|    1 |    5 |          2 |    2 |          2 |
|    2 |    6 |          3 |    3 |          3 |
|    3 |    9 |          4 |    4 |          4 |
|    3 |    9 |          5 |    4 |          4 |
|    4 |    8 |          6 |    6 |          5 |
|    5 |    6 |          7 |    7 |          6 |
|    5 |    7 |          8 |    8 |          7 |
|    6 |    4 |          9 |    9 |          8 |
|    7 |    2 |         10 |   10 |          9 |
|    7 |    5 |         11 |   11 |         10 |
|    8 |    2 |         12 |   12 |         11 |
|    9 |    5 |         13 |   13 |         12 |
|    9 |   10 |         14 |   14 |         13 |
|   10 |    1 |         15 |   15 |         14 |
+------+------+------------+------+------------+

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

EXTERNAL REFERENCES