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.

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.

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

EXTERNAL REFERENCES