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NTILE

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

The NTILE window function allows for dividing a window into N buckets of equal size (e.g. when N = 4, then you'll get quartiles), and computes the bucket number for each row. For example:

SELECT
  ID,
  ntile(2) OVER (ORDER BY ID)
FROM
  BOOK;
create.select(
         BOOK.ID,
         ntile(2).over(orderBy(BOOK.ID)))
     .from(BOOK)
     .fetch();

Producing:

+----+-------+
| id | ntile |
+----+-------+
|  1 |     1 |
|  2 |     1 |
|  3 |     2 |
|  4 |     2 |
+----+-------+

Dialect support

This example using jOOQ:

ntile(2).over(orderBy(BOOK.ID))

Translates to the following dialect specific expressions:

Aurora Postgres, BigQuery, CockroachDB, DB2, DuckDB, Exasol, Firebird, H2, Hana, Informix, MariaDB, MemSQL, MySQL, Oracle, Postgres, Redshift, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Trino, Vertica, YugabyteDB

ntile(2) OVER (ORDER BY BOOK.ID)

ASE, Access, Aurora MySQL, Derby, HSQLDB, Sybase, Teradata

/* UNSUPPORTED */

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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